"Do or don't do. There is no try." -Yoda (Star Wars).
I've heard this time and time again. And it's true: You can either do something, or you don't do something. When you try, if you succeed you have done something and if not you have done nothing.
Regardless of that, I still feel like trying counts more than to not do anything. Even if your knees give out under you, it doesn't mean no action was done to stand. It's not as if you never gave a thought, a care, or the effort.
Anyway, a lot of people seem to adopt this way of thinking. Perhaps it helps them get things done. I don't know since it's not really my philosphy. I'd rather like to think,
"And even if nothing happens, it doesn't mean we didn't try."