Do you think that you are doing God a "favor" by serving Him? Do you think He needs you and your service? Note this: God does not need our service
Good. If God doesn't need my measly service, I've got better things to do. I must remember this for the next time a JW relative tries to lecture me. BTW, God hasn't done me any favors lately, so I'm far from feeling beholden to him/her/it.