5) You are not all that
As a pastor, it is my job to comfort the afflicted while at the same time afflicting the comfortable. I love to encourage students who want to make a difference at their schools but are afraid to step out. And I also love to shoot down those students who are doing something and have become cocky about it.
Hey, guess what? You aren't all that. Oh, wait. You lead a Bible club at your school? Congratulations. That means you've been chosen by God for this great work - this great work that He is doing. This isn't about you. It's never been about you. It never will be about you.
"We spend our days trying to hijack the story of God, turning it into the story of us."
When you share what God is doing at your school or through your life to others, the focus should always revolve around Him, not you. This doesn't mean you walk around hanging your head or reject every compliment that comes your way. Simply smile, say "thank you," and quietly thank God that He was the one that gave you the strength to do what you did in the first place.
"What, after all, is Apollos? And what is Paul? Only servants, through whom you came to believe - as the Lord has assigned to each his task. I planted the seed, Apollos watered it, but God made it grow. So neither he who plants nor he who waters is anything, but only God, who makes things grow." 1 Corinthians 3:5-7 NIV
You'll notice that it's really God that does it all. He just chooses to let us play a role in the story. He chose Paul to plant the seed and Apollos to water it, but He was the one who made it grow. Neither of these men would have been effective if God hadn't made the seed grow.