Folks are saying to practice your fall-possibility-sport where a fall won't hurt as much. I say take it a step further and do focused practice of falling and rolling intentionally. There are a lot of videos on YouTube about how to do so.

When I started long boarding at ~38, I practiced throwing myself into a roll first from a crouch, then standing, then standing on the board - onto grass of course. It helped a lot when I did inevitably have unplanned falls on the pavement.