Sometimes it's hard to just pause and enjoy life. I mean, we as human beings are crazy busy. Everything that constitutes your "life" can stress you out. I would hazard a guess that if you took a good look at all the stuff you do you might find that a sizeable portion of it is unnecessary.
God said in Matthew 11:30 that "my yoke is easy and my burden is light". When you feel weighed down by life's problems, you can pretty much be sure that you are carrying way too much. Cast your cares upon our loving Father, because you were not designed to be stressed. You will love your life so much more, I promise you that.