My life's been dominated by stress for the last year at least. In my attempt to break the cycle I'm starting to do the following:

1. drink less alcohol
2. get more sleep
3. drink less caffeine
4. get more exercise

Simple to say but harder in reality when you have 2 jobs and study in spare time... It does seem to get easier in time though & my skin has certainly improved after just 2 weeks...

Good luck.