I've had anger problems.

Having lower levels of Gaba makes anger issues worse. Some meds work to try to balance out Gaba levels. I prefer to take natural supplements instead of meds, I find meds side effects are much stronger. Im very med sensitive, taking the min dosage of many drugs is too strong. for Seroquel I break the lowest dosage pills in quarters.

You can't take Gaba supplements by themselves as it doesn't cross the blood barrier, taking with Vitamin B helps with that conversion. I tried taking True Calm, it contains a bunch of stuff that increases Gaba levels and it made a huge difference. Since Gaba is an inhibitor having more leads to relaxation, can cause sedation. For my taking 1/2 capusle at night was optimal, more than that and I get fairly sedated during the next day.

Doing just biological changes helped but didn't do the trick on its own. Like others have suggested do research, searching online for articles is always a good start.

The Anger Trap: Free Yourself from the Frustrations that Sabotage Your Life

It talked about a couple things that you specifically mentioned: You get upset when something happens that you feel shouldn't. In the cases you mentioned they aren't supposed to happen. I said "supposed to" because there some cases, involing other people where your expectations might not be totally correct. In this case they are, but in some involving other people its good to try to think from that persons point of view and just ask before rushing to judgement. Lots of conflict is caused by poor communication, you can say something that the other person misinterprets.

Back to this particular issue. People with anger problems feel that things have to go the correct way and if it doesn't its completely unacceptable.

When something doesn't go as it is supposed to people think if we don't get upset and raze a fuss that were condoning it and saying its okay. You shouldn't bottle it up, just acknowledge it and let others know your frustrations is just as effective.

I find that when Im angry exersising, particularly weight lifting really helps. I just put all my frustration into pounding the weights, unlike throwing things which I used to do it helps more and doesn't leave damage after that I feel really guilty about. Excersising helps the body physiologically to reduce stress.

BNLsMOM made a very good point. Angry people might not be particularly bothered by a specific thing, but they have built up anger that they need to unleasesh. If thats the case than if current triggers are fixed you'd just find other excuses to lash out. This often happens from work, you can't lash out at terrible customers or a jerkish boss. Or other major life stressors.

Anger is caused by stress. You don't have to respond to it by being angry, there other ways to relief and deal with it.