For a long time in my life, about 4 years, I felt like I had something ultimately profound on the tip of my tongue that I just couldn't spit out. Then I found it, it's very profound and yet extremely simple to understand, and I think it applies here as well. What came out were these words:
All things come to pass.
Since then, in all situations in my life, good or bad, I remind myself of these words, and it helps me put everything in its proper perspective.
Satori