You can’t skip the pains in your life.
There’s no intact grown-up. No one can become mature without getting hurt. You have to go through pains to learn something. There’s no way to escape. It’s how you deal with it.
We could learn from others’ experiences. We could learn from books. But without any experience of your own, you won’t really understand the meaning of the lessons.
You will get older, but you may still be as childish. Every real adult has wounds or scars somewhere. You can try to get hurt quicker and less painful, but you can’t skip it.
It’s going to hurt anyway.