I have a best friend who is bi-polar 2 and I may also be bi-polar because we are soooo much alike... I don't see that just because someone is bi-polar that they are selfish... but addicts are selfish in nature... that's just what we were... and that's what caused all our problems...
And you are absolutely right to seek help for your mental health, I have too and have to wait till I'm at 6 months sobriety before they will formally diagnose me, they are treating my anxiety for now and that's been great-but I needed the extra help to be able to function without alcohol.
Best of luck friend!