It is a known fact that continuing to face new challenges and develop new abilities is extremely important to your growth and maturity. The good Lord knows I think I'm mature enough but I still get challenged as much as I've always been.
The days ahead will be full of new experiences, things you have never done before. You may not know how to do them, but you will learn. Everything you are doing today was new to you at one time and now look, now you can do it.