To dedicate your life to bettering the lives of the less fortunate among us is one major way to do the Lord's will. Clothe and feed the hungry, quench the parched mouths of the thirsty, and do it all with a humble heart that received no credit but gives ALL glories to God!
Let your love and happiness be great testimony! A great many are aimless, seeking joy in vanity, intoxication, and they walk with heavy limbs in great misery. Show them a smile and extend an invite to Sunday worship, hand out uplifting quotes,etc. Perhaps missionary work is your calling?