Honestly, I am still not sure what you are after.
Do you want us to tell you that MA aren't any good? I could do that but it isn't what I believe. Do you want someone to say Shazam! and turn you into a respected MA that everybody treats with respect. That's not going to happen either.
Do you seriously want answers on how to get your confidence back? That's a tough one. Especially when you haven't given us any clues as to what caused you to lose your confidence. Not sure anyone but yourself can, but without some clue what caused you loss of self confidence, it is very difficult if not impossible. Care to enlighten us?
I am also curious why you use the name Xanax? Are you currently undergoing treatment from a Psychologist or Psychaitrist? Are you taking some type of anti-depressant like Xanax? Is that when you noticed your lack of confidence?
I am inclinded to add to the advice not to just engage in a fight to see if you can gain confidence by beating some one up. From the way you sound, I think that would do you more harm than good. But perhaps some monitored and controlled sparring matches might. If you do, just keep yourself under control like a good martial artist should.
Xanax is not an antidepressant and shouldn't be used as such. It's a sedative/hypnotic and is used to treat agitation states. It's also very addictive and is one of those drugs that makes me cringe when I hear that people are taking it on anythinig like a regular basis.