Confused by being an adult

When I'm alone,I aways ask myself:"Hi,Sanyang!What's your problem?What are you scared?".I didn't answer myself,but I know,I've met a problem!

It's not like when I was a senior,young but brave enough,doing the things that I just wanted to do,never thinking about the result.But,guys,you know,I am already an adult!The way of doing the thing of an adult is much more careful than a senior's.Cause adults always think about the thing if they lose,they always prepare for their losing,even lose never comes.That maybe the problem of being an adult!

I'm confused by that kind of thing.I know that I need to improve,to bring something that I've lost to my life.That will be good,and I won't only be an adult,right?