Beautiful post. It's very true that nothing lasts forever, whether good or bad. We have to take life as it is, with pains and happiness altogether. In what I do, whether it is motivational speaking or coaching or my blogging, I try to show people that pain is temporary and that it always carries some lesson which benefits us in the long run. The best way to keep our happiness is being happy with what we have, this present moment and stop sweatting the small stuff.