Like Liz has said, you have to accept that you have P/PA and it is a lifelong battle. Once I accepted that, it made me a much stronger person and more determined not to let it affect my life and, 99% of the time, that works! I am much more open with my skin / PA and completely up front about it with everyone I meet.
Funnily enough, I think it has also made me impatient and less tolerant of others as I am not very good with people who moan a lot about small things that they have control over.
The main thing is that I have met some brilliant people on here (and even let one of them live in my flat!) and without this place I would never ever ever be the person I am today.