I used to think the most important thing was to avoid making mistakes. I thought if I could just stay out of trouble, things would be okay. The problem with this perspective is that I avoided all kinds of adventures because I thought I might goof up.
So my wish for you is that you take enough time to enjoy what's right in front of you. It's prudent to prepare for the future, to seek guidance and blessing from the Lord and so on, but don't forget that today is part of your life too. And I hope that you don't waste as much effort as I did trying to avoid mistakes -- focus rather on seeking the excitement and adventure and blessing that God wants you to enjoy.