Whoever will lose his life for Christ's sake shall find it. Jesus released a power that Satan couldn't defend himself against - self sacrifice. Our flesh will fight against the Spirit when we try to fast, pray, or minister to others. We must be willing to die to selfishness as the planted seed must die. Most men live a life of self.
Few men take the sacrificial life.
We need to be like Jesus. It is not what we get, but what we give that measures our life. Satan cannot understand sacrifice because he is selfishness impersonated. God loves a cheerful giver. We must give of ourselves.