Meditating on the Word of God.
This Book of the Law shall not depart out of your mouth, but you shall meditate on it day and night, that you may observe and do according to all that is written in it. For then you shall make your way prosperous, and then you shall deal wisely and have good success. Joshua 1:8
Blessed (happy, fortunate, prosperous, and enviable) is the man who walks and lives not in the counsel of the ungodly [following their advice, their plans and purposes], nor stands [submissive and inactive] in the path where sinners walk, nor sits down [to relax and rest] where the scornful [and the mockers] gather. But his delight and desire are in the law of the Lord, and on His law (the precepts, the instructions, the teachings of God) he habitually meditates (ponders and studies) by day and by night. Psalm 1:1-2
Make me understand the way of Your precepts; so shall I meditate on and talk of Your wondrous works. Psalm 119:27
On the glorious splendor of Your majesty and on Your wondrous works I will meditate. Psalm 145:5