"For the man sound in body and serene of mind there is no such thing as bad weather; every sky has its beauty, and storms which whip the blood do but make it pulse more vigorously."
— George Gissing
I have lived by this quote for quite some time now. Every experience is a gift, be it good or bad. Every experience affords a chance to learn something, and that makes it valuable.
On one hand, this could mean that it all boils down to how we see the situations we're in. I could be criticized here for saying that I merely have very good rationalization skills, which makes me good at justifying anything that I've been through, minimizing my regrets.
On the other, I don't think it's as simple as that - being merely good at looking at the bright side of things is a diminished form of living; it is passive and rather uninspiring. Instead, what this importantly entails is having a frame of mind that embraces every opportunity one is thrown. Enter into novel situations with the perspective that one will come out stronger. We have no idea how much we can do until we do it. We are also more liable to regret the things we do not do more than the things we did (if it is the reversed, well to put it bluntly, that would be somewhat unfortunate). Every daunting challenge has its silver lining in the aftermath, and every emotion felt is beautifully intense inasmuch as it is fleeting. To have anything less (or worse, to want anything less), you're selling yourself short on life.
Every individual has potential. To waste it with negativity, hesitancy, fear, reluctance, sloth, and subsequently, regret, would be sin.