I gave full custody to my children's father.
Why did you give him custody?
I think that's what's best for my kids.
Sorry for what you are dealing with. You don't have to keep custody of your children if your spouse wants to have full custody. It is good that you did the best for your child.
I know.
It's good that you care for your children and want what's best for them. Hopefully at some point you'll be in a position to have shared custody again.