Hi Liam,

Sounds like you’re really struggling and definitely not wanting to become a destructive and angry person (I think you said “evil”).  I second what Anita said above that Buddhism helps by allowing us to actively engage with our negative emotions and transform them through this process of engagement.  It is therefore a difficult thing to do, because from what you’ve written, you worry about becoming overtaken by these very same negative emotions that you are carrying inside.  Also, it is just as Paul had said, that you might still struggle even as you practice some aspects of Buddhism.  What helps is a community as Peter recommended, as well as additional help in terms of possibly some psychotherapy.

If you are interested in Buddhism in a no-frills way, try looking at some of the stuff Brad Warner (http://hardcorezen.info/) has written.  He’s an American Zen priest that with a no-nonsense approach and is honest about his own life struggles and how he attempts to use his Buddhist practice to “survive” life.  As you can tell, I’m a fan of his.

Good luck!