I believe in the concept of surrender. Not of values, principles or morals, but of circumstances and planning. How can you effectively plan for all variations of possibility? Why worry needlessly when your mind can create such unfounded turmoil?
I'm not saying it's easy to always go with the flow. It's taken me lots of practice (and I'm still working on it) to be able to ease up when things don't go my way.
I just feel that when I look back over my life I can't help but be amazed at how things turned out when I surrendered my life to chance.