What do I do with wrist pain to make it better?

Did you fall or hurt it somehow? Why the pain?

Do you sit at your computer a lot? The hand you use to move the mouse or cursor pad often hurts from being held at an unnatural angle.
Buy a wrist brace, the rigid kind. And use a desk with a 'return,' a side surface to rest your arm on. Even just a small table or cabinet no more than an inch lower than your desk.