And acting upon this, you'll put the Lord at work. For with each promise there is a condition. Once the condition is being met, His promise will follow. We can praise God knowing that He is working all things for our good and for His glory. Praise is the THE antidepressant that we all need.
Praise is also good for a lot of other problems.
A merry heart doeth good like a medicine. May its echo be heard on the earth, while the heavens HIM declare Allow your tears of joy to flow, for He has made you free from sin and satan's grip, so you'll praise His name with glee. These things have I spoken unto you, that My joy might remain in you, and that your joy might be full. O Lord my God, I will give thanks to You forever. The Lord dwells on the praises of His children.