Without a goal or a vision, our days will just go to waste. It may sound like a cliche, but yes, life is short.
And what you do now matters. It will all add up.
Be discerning, but don't be overly cautious. You'll learn more from the (unintentional) mistakes that you'll do.
Don't be driven by fear, but by the purpose that God has given you.
What are you aiming for?