I didn't have much self esteem to start with, but what I had BP took away and shredded. I lost confidence in my ability to do anything, especially work, was worried about everything I did and said... so worried about everything. my diagnosis sent things spinning even more.. but with time, especially as my meds started evening things out and lots of therapy, things are getting better - bit by bit...
Give it time and talk to a T about how you feel and hopefully you will gain more than you lost.