TO worship God even for the sake of salvation or any other reward is equally degenerate. Love knows no reward. Give your love unto to God, but do not ask anything in return even from Him through pray.
When you've said all of the bad things and all of the good things you haven't been saying, you will find that what you've really been withholding is, "I love you. " You don't have to go looking for love when it is where you come from.