An upside a senior student told me:
"Hey, everyone has trouble with certain things, and is good at certain things; it's just how your body is. Think of it this way. You're learning all the tips and tricks, so you'll be able to teach rolls really well..."
I hadn't thought of it like that. But I saw someone else having trouble, and I conveyed one of said tricks after watching her try, and it allowed her to do a roll. So there's a bright side to being slow - you can help other slow people. ^_-