When my fingers hurt after too much time on the keyboard, I take a break until the pain stops and get right back to typing. If the quote says you didn't start fast enough just move on to another quote.

My tip to improve your typing speed is to just find some music that is fast paced, to your liking, and FUN! After you have found a catchy and fast tune you can start. You'll find your hands vibrating with restlessness. Next thing you know you'll be hitting high speeds and maybe high accuracy with it.