"And he said unto them, Verily I say unto you, There is no man that hath left house, or parents, or brethren, or wife, or children, for the kingdom of God's sake,
Who shall not receive manifold more in this present time, and in the world to come life everlasting."
I think it is interesting that we are promised blessings in *this* life as well as the life afterward. Our lives aren't supposed to be stark and empty, waiting only for a heavenly reward. We do have to give up things, but God never leaves us without a reason to hope, or to enjoy our lives. He takes care of us, as we look to him. :)