The following three things helped me tremendously. (1) Stop using an external mouse. Right now. The sideways flick your wrist does when you reach for it is mur

The following three things helped me tremendously. (1) Stop using an external mouse. Right now. The sideways flick your wrist does when you reach for it is murderous. Most laptops' integrated pointing devices will help a lot. The Apple trackpad is great. IBM (Lenovo) trackpoints work well too. Switch up hands you use for the pointing device. I lucked out on this one: the last desktop computer I ever owned died just as my RSI symptoms peaked. I then didn't regularly use a computer for around three months, which let the symptoms subside. I've owned a laptop as a primary machine ever since (eight years now), and have had very few recurring symptoms. (2) Exercise. This is huge topic, obviously, but in particular, core strength development will help your body in surprising ways. Very specifically, use light (<20 lb or <10 kg) dumbbells and do regular and reverse wrist curls. Obviously go easy on these at first. (3) Keep your wrists straight when you type. Easier said than done, of course, but good posture and a good chair will help out here.