Psalm 34:1 – “I will bless the LORD at all times; His praise shall continually be in my mouth.”
Say what? How is that even possible? “I will bless the LORD at all times!” Easier said than done, right? David is saying simply, “There is no time in life when His praises are not on my lips.” I don’t believe David is saying that 24 hours a day some formal praise must be coming from your lips. Just like God doesn’t expect every minute to be a prayer (I Thess 5:18), there is something else David has in mind here.
I read Charles Spurgeon explain this way, “In every situation, under every circumstance, before, in and after trials, in bright days of glee, and dark nights of fear. He would never have been done praising, because never satisfied that he had done enough; always feeling that he fell short of the Lord’s deservings. Happy is he whose fingers are wedded to his harp. He who praised God for mercies shall never want a mercy for which to praise.”
David has determined to celebrate God. He is resolved. His mind and spirit are fixed. His heart is riveted on Him. As Spurgeon would say, his hands are wedded to this harp of praise.
Here is the obvious challenge: we often find time to praise him when things are going good.
But when is the last time you had a terrible day at work and sang His praises in your car on the way home? When was the last time your husband, wife or child yelled at you and you thanked God for your family?
David is saying, “I will praise the Lord when it is good and when it is bad.” So Job had it right when he said, “The LORD gave, and the LORD has taken away; blessed be the name of the LORD” (Job 1:21).
David is saying every opportunity I have I am going to praise Him for something somehow and somewhere.
What will you praise Him for today?
 The Treasury of David, pg. 122.