A few things I can do to avoid repetitive motion/strain injuries, or what most people go ahead and call carpal tunnel, while drawing. Improving posture (I'm slouching right now, oops). Taking buttloads of breaks (I forget to do this, oops). Restricting hand and wrist movement while I sleep to prevent it from clenching when I'm not conscious which would exacerbate the clenching it does when I am (I made a makeshift wrist brace out of an old sock, a ruler and the corner of a coat hanger because I am crazy). Reducing the amount of pressure I put on the pen (by wrapping it in foam. I found just what I needed in my 3DS's box, so thank you Nintendo).
Something bad happening to my hand or arm is one of the scariest things to me. I dunno what I'd do if I got crippling arthritis, or it got paralyzed, or burned or smashed or sliced off or something. I will never be rich or important enough to get a robot hand and even if I were it wouldn't be the same. My mom used to be a barber but had to stop because of shoulder pains. That would be it for me. There are other things I'm really good at and enjoy doing, like cooking, but... it's not even just about the career I want. I would keep drawing even if nobody knew or cared. It's what if I became physically incapable of doing the thing I most like to do? So when my hand is hurting like it is now, it's terrifying. I gotta fix this