So growing up bipolar I had a lot of problems controlling my temper.  But I did learn a lot of self control when I took Karate.  With it, I was able to prevent a lot of my violent tendencies.  However, as I grew and gained more self awareness, I slowly became afraid of how badly I could lose control.  I only took Karate for a short time because of finical reasons and the fact that I was too much for the kid class but I couldn't remain interested with the adult class.  

Now that I am healthy and an adult, I am considering taking some kind of fighting class.  There is a UFC gym near where I live that I am considering joining.  Obviously self defense is good as a woman but the reason I am looking at mma type classes (not that I would ever do more than working out and sparing) is more to boost my self confidence.  I now am subconciously terrified of losing complete control and maybe joining a gym for more than just working out with help with that.  If I can learn to trust myself in high adrieline situations, I think I can become more outgoing again.  I don't really care about ranks, it is more to work on my confidence in my self control and not smoothering every aggressive impluse.  I mean, not all aggression is bad.  After all, you need to be aggressive in job searching.

Does my idea seem too unreasonable?   Any advice?  I am primarily looking for operturnites to work with supressed agression and I have no desire to do a huge ranking system.  Or having to spend lots of money on equipment.