text: im in a bad mood 99% of the time...why?? im in a bad mood a lot and i dont know why..it is making me mean towards my younger siblings and it gets me mean towrads my fiance...im only 19 so its not menopause..whats goin on?? you're stressed out and being stressed sometimes makes you feel this way.  maybe something happend and you felt bad about it but you're repressing it?  .....i'd go look at health sites for tips on how to loosen up or to relax like doing yoga, walking outside in the park.  exercising at home or doing something you love?  also sometimes siblings can and will irritate us, and not just siblings but other people.  at this point, just think of something pleasant or count to ten.  one guy told me to sleep it off? i don't know, what ever works for you, find out.   ...one more thing...just be mature and don't ever do anything that will sabotage your future whatever you want it to be.