You're not going to be sure how it's all going to work out, but that is what will cause you to grow, that's when you'll learn to trust God in a greater way. God is not interested only in the destination. He's teaching you along the way; He's getting you prepared and growing you up. He will lead you purposefully into situations where you're in over your head, your friends can't help you, and you don't have the experience you think you need.
I believe God's keeping the records, and I believe you will be rewarded even in this life. Somehow, some way, God will make it up to you. It may be He protected you from an accident you never knew. You can't give God something without God giving you more in return, whether it's peace or joy or satisfaction.
Don't ever criticize yourself. Don't go around all day long thinking, 'I'm unattractive, I'm slow, I'm not as smart as my brother.' God wasn't having a bad day when he made you... If you don't love yourself in the right way, you can't love your neighbour. You can't be as good as you are supposed to be.