Falling down. Everyone does, what distinguishes is if and what we learn each time to make us better. To misquote Samuel Beckett “Fall once. Fall again. Fall better”
Rocks do not move, they stand the test of time, when storms come you can cling to them. You may cut yourself on them, you may bruise when you fall. They let you build on solid foundation.
Safety nets move, they catch you, they allow you to take risks you would not otherwise, they are temporary, they mean your mistakes cannot hurt you.