Stressed out? I suggest making a thankful list. All you do is write down three things you are thankful for at the end of the day - it can be anything, from a person, to an object, to an activity, etc.
I started this practice a few months ago, stopped for a while after I was robbed (sadly this is right when I should have been going strongest), and continued the practice into this year. It has been something small and private that has helped me stay positive through those stressful or occasional tough moments. Indeed, there's nothing like a dose of personal perspective.
For a bit more perspective, make sure to watch Steve Job's commencement speech from a few years ago - it is excellent and worth your time.