I don't really have a motto or a philosophy, or a specific attitude. I live my life because by some stroke of luck I was born, and I'm curious to see where it leads. At least insofar as it's pleasant enough to want to continue - when I get old enough, if it starts getting painful, I might just jump off a bridge or something for a convenient end :).
Actually a bridge is a bad choice, especially if over a body of water - drowning sucks, believe me. Bullet to the head maybe?
But nah, I see and enjoy both the positives and negatives in life. I'm having fun joking here about death and mortality, but most of the time I'm pretty cheerful, friendly, kind, and prone to being amused ;). And very honest, at least when I can get away with it.