Sometimes there is untapped wisdom that comes to life in dreams. At least, I think there is. In any case, I dreamed this quote last night:
Anything good that one attempts is worth the shot.
(Alternatively - anything worth doing is worth the attempt)
I like it. I think it's really true because even if you don't achieve exactly what you want to, a lot of what you gain by reaching for goals is whatever you learn while doing so. There is value in trying, just as there is in succeeding - maybe even more. Life is always, always a learning process and if you pay attention, you'll find yourself growing and achieving in ways you never expected or planned. And those are the best ways.