In the wake of hard times, I sometimes hear people (myself included) saying, "You deserve to be happy..." but do we? Somehow living in this culture we end up developing this sense of entitlement, that we deserve everything we want, that we deserve to be happy. Sadly, sometimes we interact with God that way too. We pray for the things we want because we know that's what will make us happy only to be disappointed when God doesn't answer our prayers the way we expect.
Have you ever considered the irony of the word spoiled? We're talking about spoiling in the sense of getting everything you want, but in getting everything that you want you're being spoiled, as in what happens as fruit goes bad. In other words, there's real truth to the phrase "spoiled rotten." If we were given everything we wanted and no desire was unfulfilled, where would God fit into our lives? There wouldn't be room for Him, because we wouldn't feel the need.
I would argue that standing in line for days to get the newest iPhone or spending your entire allowance on a pair of boots that you can't even wear in inclement weather (then what's the point!!) or whatever other ways we might fall into the trap of materialism, is pursuing happiness. And happiness, is fleeting. It lasts only as long as the latest fad. Joy on the other hand, transcends the momentary trials of life. True joy is a deep peace within your soul that can't be tarnished no matter what horrors the world tries to inflict on you. True joy comes from God. It is surrendering to the knowledge that you don't need to worry because He will be with you in all things and He will provide.This is part of the grace that He is constantly pouring into us; part of what brings us to overflowing, and compels us to worship Him. We can be joyful despite the circumstances of our lives because we know and trust that God will sustain us. If we know that He will always be there and our needs will always be taken care of... how can we still "not feel like it" when it comes time to worship Him? Worship grows out of that joy... and if you're not feeling particularly joyful lately, perhaps you need to take a good, hard look at why that is.
"I have told you these things so that in me you may have peace. In this world you will have trouble. But take heart! I have overcome the world." -Jesus Christ