Well, one only needs to read over my own posts to see that I cycle in and out of irritability and hostility.

I believe it stems from frustration at the inability to control a situation or what is going on around us. In my experience factors like fiddling with my medication and PTSD triggers that lead me towards it.

Try to concentrate on what is positive and what you can control. I'm one for making lists of evidence for and against factors affecting my life. The comparison helps to look at the reality of a situation - and problem solve it out.

Hope this helps.