Proverbs 3:7-8 (ESV) Be not wise in your own eyes; fear the Lord, and turn away from evil. It will be healing to your flesh and refreshment to your bones.
Faith and obedience are good for us. There is nothing so miserable as a Christian out of the will of God. Whence the stress, depression, pessimism, anxiety of so many believers? Sometimes, perhaps a great deal of the time – such things arise from a walk that is not close to God, that is participating in known sin and that is ignorant of the great blessings of obedience. This does not mean that when we obey everything goes as we want. It means that there is peace, joy, clearness of conscience in obedience, and that is healthy, no matter what our health is like.