Hi Radio! Like most of the others - I didn't make any sort of announcement. I wanted to see if it would "take" first. I didn't really trust myself, and didn't want to ruin my credibility with the people closest to me - or what was left of it. (I had already alienated many of them with my behavior.)
I decided to see how it went, and then say something when I felt confident that I was going to make it. After a few months, I was happy to tell everyone. I wanted people to know I was aware of the mess I had made, and was facing up to the things I'd done.
Whatever you decide, be proud of yourself for making this big change in your life.