i made a diary over a week, at the end of each day i tried to chart my anxiety levels and what may have triggered it, i also wrote down how many hours sleep i had each night and a rough idea of what i ate
that REALLY helped, i cannot reccommend it highly enough. i have low level anxiety but mapping the triggers out like that has helped me avoid situations that bring it on
so for me this has meant
being honest with people and more assertive (not lying to protect ppls feelings then being anxious about what i think they're thinking etc. just say it like it is and move on)
avoiding high sugar binges, no caffiene, as much sleep as possible, no tv after 8.30pm, writing a list before i go up to bed and then refusing to think worry about things on the list-once it's down it's down and i can deal with it when im ready
trying not to be late to things
working out what things make me happy and what gives me a sense of achievement, and finding ways of doing those things. (eg i love helping people, it makes me happy, gives me a sense of achievement and that my life is worthwhile, which in turn lowers my anxiety)
exercise. it really helps. find something that works for you. i tried aerobics and had to leave the sessions to cry. netball was brilliant though, and im still going years later. so, try lots of different things, dont panic if one doesnt work.
hope that helps.the diary is the main thing to start with