user19124: I've started to meditate in recent days. After meditation, one day I feel happy and the other day I feel upset, angry and depressed. Also, at the end of the meditation I feel like I just woke up from sleep.
Why is this happening to me? Is there any solution to overcome this issue?

user11009: Ven. Vijithananda said this is due to practicing Samatha meditation. When you practice Samatha you have the irritation towards any disturbances to your meditation such as sound and the people around you. You also irritated for not being able to experience that meditative happiness.
As per Ven. Vijithananda, sleepiness is some sort of progress (defeating four Maras) however you have to go beyond sleepiness.
The solution for this is to practice Satipathana.

user18960: Are you sure you’re not just noticing your regular mood fluctuations?  Meditation makes us more aware of our internal states.  Without sitting, we are often oblivious to what’s going on within us.  When you start sitting, you begin to notice the good along with all the time you really spend being tired, despondent, and annoyed.

user10844: This happens because the meditation lack alertness. You focused on calmness without cultivating vitality. That will surely bring about drowsiness, and it leads to sleepiness.
In this state of non-wakefulness, of non-clarity, discernment is very weak. So, it's easy for any mental obscurations such as anger or sadness to build up without your noticing. So, by the time you 'got up' from the blurry state, your mind is filled with them.
Here's an easy way to prevent this: Meditate with your eyes open.

19124: <p>I've started to meditate in recent days. After meditation, one day I feel happy and the other day I feel upset, angry and depressed. Also, at the end of the meditation I feel like I just woke up from sleep.
Why is this happening to me? Is there any solution to overcome this issue?</p>
 11009: <p>Ven. Vijithananda said this is due to practicing Samatha meditation. When you practice Samatha you have the irritation towards any disturbances to your meditation such as sound and the people around you. You also irritated for not being able to experience that meditative happiness.
As per Ven. Vijithananda, sleepiness is some sort of progress (defeating four Maras) however you have to go beyond sleepiness.
The solution for this is to practice Satipathana.</p>
 18960: <p>Are you sure you’re not just noticing your regular mood fluctuations?  Meditation makes us more aware of our internal states.  Without sitting, we are often oblivious to what’s going on within us.  When you start sitting, you begin to notice the good along with all the time you really spend being tired, despondent, and annoyed.</p>
 10844: <p>This happens because the meditation lack alertness. You focused on calmness without cultivating vitality. That will surely bring about drowsiness, and it leads to sleepiness.</p>

<p>In this state of non-wakefulness, of non-clarity, discernment is very weak. So, it's easy for any mental obscurations such as anger or sadness to build up without your noticing. So, by the time you 'got up' from the blurry state, your mind is filled with them.</p>

<p>Here's an easy way to prevent this: Meditate with your eyes open.</p>
