Nothing is more common than unfulfilled potential.
Spend the rest of your life doing what God prepared you to do.
The goal is not to make you a smarter sinner but to make you like the Savior.
The Bible is the divine means of developing spiritual maturity. There is no other way.
Maybe you've attended church for five, ten, or even twenty years, but you've never cracked open the Bible to prepare yourself for effectiveness as His instrument. You've been under the Word, but not in it for yourself.
How big is your God? The size of your God determines the size of everything.