Psa 37:3 Trust in the LORD, and do good; so shalt thou dwell in the land, and verily thou shalt be fed. Psa 37:4 Delight thyself also in the LORD; and he shall give thee the desires of thine heart.
Here is the key to a good life: do good and trust God, or as the song says “trust and obey”. God has promised to provide for those who do good, live righteously, and trust Him. God has promised deep satisfaction to those who find their deepest joy in Him.