I’m not quite a quarter of a century old yet, so I’m not going to take it upon myself to give you anything profound that only age can tell you. But I would like to give some pieces of advice from my few years of experience.
Seek the truth, the whole truth, and nothing but the truth. Truth is absolute, so you’d better find the correct answers to all your questions. God knows the truth – God is the truth – so ask Him.
Listen a lot. Listen to God. Listen to old people. Listen to children. Listen to people in between. People will tell you all sorts of things, especially if you listen. But be careful who you listen to.
Read and study your Bible. Memorize verses. Pray.
Worship isn’t just going to church and singing. Everything you do should show that you give ultimate value and honor to God.
Never skip church if you can help it. Don’t ever skip church just because you “don’t feel like going.” Chances are, if you feel like not going to church, that’s when you most need to go. God always has something special if you look to Him.
Surround yourself with people who are better than you. Become mature enough to be one of those better people while you do that.
You’re not invincible, but God is.
Never do anything you wouldn’t want to explain to the paramedics.
Make friends. You’ll need them, and they’ll need you.
Always be faithful. Do what God says, when He says to do it, for as long as He says to do it.
Never stop learning. I’m pretty sure that’s a big piece of having a longer youth – I’ll let you know when I’m older.