I was recently sent a link to The Ultimate Guide to Workstation Ergonomics, over at HR World. While the tips offered are basic – though helpful – what I really think is great is the extensive list of links below, to all kinds of resources that might be useful if you're trying to learn more about ergonomics and your options. Check it out.
To their list of recommendations, I would personally add:
11. Find a body-mind class of some kind, whether it's yoga or Feldenkrais or Tai Chi or whatever... just something that is going to help you start to learn to listen and respond to your body (as most people in our culture are pretty adept at ignoring its signals), while also building strength and flexibility. Just jump in – it's never too late to start.
12. Invest in bodywork (massage, craniosacral therapy, one-on-one Feldenkrais, etc) with someone who comes highly recommended. There are many different modalities out there, so ask around, and don't be afraid to try a few people until you find someone you want to work with. (Same goes for yoga teachers, actually!) Think of the money you spend as an investment in your well-being, rather than a frivolous splurge.