Vegetarian since 1998
"Vegan" since 1999 (I think - it was a gradual process)
I'm not one to read labels, though, so I try not to use the vegan label too much, out of respect for those who are more vigilant than I am. I don't wear leather, eat honey, meat, milk, eggs, etc - but I know I get some miniscule amounts of hard-to-pronounce animal derived products in things from time to time....
I was very strict for awhile, and it made my life feel like such a hassle - eating out quit being fun, and I began feeling resentment toward everything and everyone.
It was either change, quit, or resign myself to feeling anxiety all the time....I'm much happier now that I've relaxed a bit, and only a teeny tiny fraction less "pure" than I was before.