... you will never know.
If you don't even try, you will never succeed.
Failure is a real possibility. But, so is success.
The worst thing people can say is no. But, what if they say yes?
But if you don't even ask, if you don't even try, the possibility of success drops to zero.
Err on the side of action.
Besides, when people reject you, their decision is not personal. It's practical. So, why should you take no's, rejections, and failures personally?