“Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own? For you were bought at a price; therefore glorify God in your body and in your spirit, which are God’s.”
It’s not always about you. As a human being, you must remember that your existence is made possible by the man upstairs. Be able to recognize that a healthy lifestyle will provide you with the foundation necessary to glorify God and perform good deeds. If you’re unhappy and unhealthy you will not be motivated or provoked to make a difference in the world.