Re-Inventing the "Joy" in life.....

So has anyone ever had a really hard time trying to find the "Joy" in life? I used to enjoy so many things so much more than I do now, its almost like the things I used to like to do got lost somewhere, even if I still currently do those things.
You know things really aren't as bad as they could be. Realistically speaking I have a wonderful family, two beautiful boys, and most of my needs are being met to a point. But the joy is missing. I know Brandon is having a hard time not being employed his joy is gone, the joy in knowing your providing for your family.
In turn I've lost my interest in most things and they just don't seem to be as enjoyable as they once were. Instead I'm consumed with worry, doubt, and of course guilt.
Sounds odd to add guilt to it, but really everything you do comes with some guilt even when you buy the necessities of life like Toilet Paper, you ask your self if you should spend the money right now. I find my self almost consumed with numbers and guilt over those numbers. If I thought we could sell it, its been on Ebay, a homemade poster, or local newspaper. Unfortunately not everything always sells and you find your self wondering how this is ever going to work out.
I wish sometimes that I could go back to the mindset of a child. They find joy in everything. From playing in the cold water of a creek, to a mud bog, to huge'n there kitty. I miss being able to enjoy the moment, the stress and worry seem to suck it out of me.
So as I reflect on ways to make myself think happy thoughts, (I still don't know how to re-invent the "joy" in life). I dug out some pictures that Brandon has taken recently of the boys being boys and looking at them I can see that even if we are struggling with the situation, its not (at least not now) effecting our kids negatively, which I am very grateful for. I can see how much fun they are having and I'm glad to see it.