The other posters have brought up a lot of important points, but if you're struggling to change, here's a first, really easy step for the lazy: Go to your neare

The other posters have brought up a lot of important points, but if you're struggling to change, here's a first, really easy step for the lazy: Go to your nearest electronics store and buy a MS Natural 4000. Do it now. Yes, I know, it might not be as high-quality, sophisticated and thorough in its design as specialized ergo keyboards. But: It's widely available, it's cheap, and - an often overlooked pro - it adheres to a standard keyboard layout, which means that it only needs minimal adjustment, both initial and when changing computers (if you don't want to lug it around everywhere or switch out every keyboard you are in contact with). All IMO deciding factors for doing that first step and sticking to it. :) And: In my experience it still gets you there most of the way regarding ergonomics - split and curved keyboard, and especially negative tilt(!). I only wish MS would rerelease a modern, higher-quality version the model (the current model is almost 15 years old now!). It is still servicable, but oh, what could be possible... PS: The immediate next step should of course be checking and adjusting the geometry of your workplace. An ergonomic keyboard won't help much if you're hunching there like Quasimodo.