A friend's 3 or 4 year old nephew told him that they needed to go to Wal-Mart. He had been recently blessed with a new baby sister, who was about 3 months old. When Uncle asked what they needed to buy he was told, "Daddy has teeth, Mommy has teeth, I have teeth, but baby sister doesn't."
Obviously, Wal-Mart doesn't sell teeth, but after I go through laughing I thought about how many other things you can't buy at Wal-Mart. If you thought this was a Wal-Mart bashing, sorry to disappoint you--I generally shop Wal-Mart or Sam's first, then go elsewhere if I can't find it there.
Many are looking for happiness and way too many think it comes from things you can buy at Wal-Mart (or some other store). It doesn't! Solomon had money to buy everything he could think of, and he did, and his conclusion was that all those things were vanity.
Inner peace, which leads to happiness, comes from knowing you are at peace with God. Such knowledge can only come from HIS Word, what He has revealed to us in the Bible. You can buy the Bible, but you can't buy an understanding of it--that only comes through study.