I' also an IT professional and my only tip for you would be this:
When you are interviewing for a job - NEVER tell about your mental problems or issues. Always focus on positive. Entry level positions in IT are not hard to find if you know how to look and interview for them.
I suggest you find someone that can help you with interviewing skills - start by reading this book here:
https://www.amazon.com/Headhunter-Hiring-Secrets-2-0-Career/dp/1519631049/ref=sr_1_1?ie=UTF8&qid=1466105907&sr=8-1&keywords=headhunter+hiring+secrets
Now as for guitar - for myself it calms me down and makes me happy, so I suggest you play as much as you can. Don't build on making a career out of that - I know of plenty starving musicians but not so many starving IT professionals.
Just my 2 cents.
Take care,
Eran.
