Advice on working with a friend

Hi yall,

So I am a baby lawyer. I have 6 months of experience as a junior laywer. Last year, I quit my job because my relatinship with my boss went really sour. He was frustrated with my work. He told me i wouldn't amount to be a good lawyer. When I was working with him, I made plenty mistakes. I used to lose focus. I knew there was something wrong with my brain so I went to see a doctor. I have ADHD (apparently 99% of the people in the world have it). Its been a year since I quit and havent found a job. I have a friend who reached out to me and suggested that we should work together. Now, the problem is that my confidence is very low. I am scared that I might mess up again amd ruin our friendship. At the same time I am broke. Do you think i should accept his offer? I am in a pretty desperste situation. Any advice would be appreciated.

Thanks!