user3603: When I get angry with someone, I can usually calm this feeling after some time through meditation practices.
But I'm wondering how can I overcome the causes of this 'anger' in a way that I don't get angry anymore with something?

user2265: Excellent that you are interested in this! You are motivated to attain Arhatship! Permanent uprooting of the poisons is achievement of Theravedin Enlightenment/Arhatship.
I will summarize the pathway in a recursive way that you can not only use for any of the three poisons (anger, greed, delusion)... but you will find will be permanently valuable for the entire path!

1st training: restrain your action by following the Eightfold path. Force yourself to follow Right Speech, Right Action, Right Livelihood no matter what!
2nd training: use anything you would use for the 2nd training, concentration. This can be a contemplation that fixates your attention away from the anger (breathing, brahmavihara, etc.)
3rd training: vipassana. Be clearly nakedly aware of the emotion as a sensation. It will dissolve.

The 3rd training is hard to do without proper advancement in 2nd training.
The 2nd training is hard to do without proper advancement in the 1st training.
The 1st training you must do or else you will sink into a lower form of existence in the next life.
Rmemember that the above method may seem like a lot in words but it's main success is in the lifestyle path you choose (animal-killers or prostitutes are not Right Livelihood and will experience more poisons than others always) and being mindful in the moment (#2 and #3), transforming the emotion. This can be a matter of a split second.
I have not referenced any lengthy suttas in this text but these are all true things said by the Buddha. I would recommend seeing the chapter on the Three Trainings within the free book Mastering the Core Teachings of the Buddha for more info and read the entire book.
Super big secrets.

user3551: how can I overcome the causes of this 'anger' in a way that I don't get angry anymore with something?
You overcome anger by being AWARE of anger.
1.When anger arises note "anger".Remember it's not your anger".It's just anger.By doing this you create detachment from it.Creating distance or space.That is usually enough to give you some gap to talk yourself out of it.
But if it persists and you find yourself struggling.Then..
2.Focus on the anger.
NOTE: Do not focus on angry thoughts,or memories or plans.When i say focus on the anger i mean focus on the physical/sensations of anger.The heat in your body,the sweat on your face,tension around your jaw,the saliva being produced in your mouth,the heat behind your ears.Be aware of your overall physical state when your angry.
Now tell me where is that anger? Show me where it is.Try to find it?So that i can mark that part of your body with a marker.We'll know who the culprit is!Is it that feeling in the back of you neck?Oh it's moved up to your head.Why is it moving around? Now it's gone down your spine.
Why is it you can feel anger so strongly but you can never seem to pinpoint it in one spot.It just moving all the time.Anger looks so big, mean and overwhelming when your not paying attention to it but once you take a closer look it seems to be reduce in size,nothing more than tiny particles swirling around different spots of your body and even then if you pay more attention you'll reduce it to nothing.It's dissolved.
We think anger is solid and permanent but it's not.When anger lurks in the deep waters of our subconscious we have a distorted view of it.It becomes an impulse that we must let out or it becomes unhealthy,it gathers momentum demanding action to be taken.But the anger is not doing this.We are.By our inability to see it clearly(ignorance).when we bring it to the surface of consciousness we see it for what it is.Just sensations arising and falling going it's own way.So the next time anger arises stay with it in this way.But if you can not then by all means practice restraint.

3603: <p>When I get angry with someone, I can usually calm this feeling after some time through meditation practices.</p>

<p>But I'm wondering how can I overcome the <strong>causes</strong> of this 'anger' in a way that I don't get angry anymore with something?</p>
 2265: <p>Excellent that you are interested in this! You are motivated to attain Arhatship! Permanent uprooting of the poisons is achievement of Theravedin Enlightenment/Arhatship.</p>

<p>I will summarize the pathway in a recursive way that you can not only use for any of the three poisons (anger, greed, delusion)... but you will find will be permanently valuable for the entire path!</p>

<ul>
<li>1st training: restrain your action by following the Eightfold path. Force yourself to follow Right Speech, Right Action, Right Livelihood no matter what!</li>
<li>2nd training: use anything you would use for the 2nd training, concentration. This can be a contemplation that fixates your attention away from the anger (breathing, brahmavihara, etc.)</li>
<li>3rd training: vipassana. Be clearly nakedly aware of the emotion as a sensation. It will dissolve.</li>
</ul>

<p>The 3rd training is hard to do without proper advancement in 2nd training.
The 2nd training is hard to do without proper advancement in the 1st training.</p>

<p>The 1st training you must do or else you will sink into a lower form of existence in the next life.</p>

<p>Rmemember that the above method may seem like a lot in words but it's main success is in the lifestyle path you choose (animal-killers or prostitutes are not Right Livelihood and will experience more poisons than others always) and being mindful in the moment (#2 and #3), transforming the emotion. This can be a matter of a split second.</p>

<p>I have not referenced any lengthy suttas in this text but these are all true things said by the Buddha. I would recommend seeing the chapter on the Three Trainings within the free book <em>Mastering the Core Teachings of the Buddha</em> for more info and read the entire book.
Super big secrets.</p>
 3551: <p><strong>how can I overcome the causes of this 'anger' in a way that I don't get angry anymore with something?</strong></p>

<p>You overcome anger by being AWARE of anger.</p>

<p>1.When anger arises note "anger".Remember it's not <em>your</em> anger".It's just anger.By doing this you create detachment from it.Creating distance or space.That is usually enough to give you some gap to talk yourself out of it.</p>

<p>But if it persists and you find yourself struggling.Then..</p>

<p>2.Focus on the anger.</p>

<p>NOTE: Do not focus on angry thoughts,or memories or plans.When i say focus on the anger i mean focus on the physical/sensations of anger.The heat in your body,the sweat on your face,tension around your jaw,the saliva being produced in your mouth,the heat behind your ears.Be aware of your overall physical state when your angry.</p>

<p>Now tell me where is that anger? Show me where it is.Try to find it?So that i can mark that part of your body with a marker.We'll know who the culprit is!Is it that feeling in the back of you neck?Oh it's moved up to your head.Why is it moving around? Now it's gone down your spine.</p>

<p>Why is it you can feel anger so strongly but you can never seem to pinpoint it in one spot.It just moving all the time.Anger looks so big, mean and overwhelming when your not paying attention to it but once you take a closer look it seems to be reduce in size,nothing more than tiny particles swirling around different spots of your body and even then if you pay more attention you'll reduce it to nothing.It's dissolved.</p>

<p>We think anger is solid and permanent but it's not.When anger lurks in the deep waters of our subconscious we have a distorted view of it.It becomes an impulse that we must let out or it becomes unhealthy,it gathers momentum demanding action to be taken.But the anger is not doing this.We are.By our inability to see it clearly(ignorance).when we bring it to the surface of consciousness we see it for what it is.Just sensations arising and falling going it's own way.So the next time anger arises stay with it in this way.But if you can not then by all means practice restraint.</p>
