we live for the benefit of "another"
when you look at the life you have you must realize it is not for you to do as you please. we are not our own the Bible says we belong to Christ and that means that nothing is ours. it never was in the first place. we were just supposed to be custodians of God's "stuff" and that includes our lives and will's.
so we do not live for ourselves but for the benefit of another. that "other" is Christ! but how do we practice that when we cant see Christ...? well it's simple we live for our brothers in the Lord.
we have to understand the art of service to the body of Christ. we are no more to ask "am I my brothers keeper but we are to declare that we are our brothers keeper"