I also take the time to enjoy the the present moment and appreciate what I have while I have it keeping in mind that everything we have, we are bound to loose it. But we can keep the memory forever.
For instance, if one year, I can afford a super nice car and loose it the next, than, I will say: "It was fun to have that car while I had it, I really enjoyed it", instead of "the car that I have now sucks, oh pity me!" I will actually be grateful that I once had the privilege of having a nice car, not linger on the fact that I don't have one now.