God gives us life and breath (Acts 17:25), so it is only right that we use that life and breath to praise Him (150:6). To receive the gifts and ignore the Giver is the essence of idolatry. The writer promised God he would praise Him all of his life, and certainly this is wise preparation for praising Him for eternity (104:33). To live a life of praise is to overcome criticism and complaining, to stop competing against others and comparing ourselves with them. It means to be grateful in and for everything (1 Thess. 5:18; Eph. 5:20) and really believe that God is working all things together for our good (Rom. 8:28). A life of praise is free from constant anxiety and discouragement as we focus on the Lord, who is mentioned eleven times in this psalm.
Warren W. Wiersbe, Be Exultant, 1st ed., “Be” Commentary Series (Colorado Springs, CO: Cook Communications Ministries, 2004), 213.