as they say - shoot for the stars, and you may just land on the moon.
I've only ever heard, "shoot for the moon, [and] even if you miss you'll land among the stars", which is the phrase as it was first said by Norman Vincent Peale. But maybe swapping "moon" and "stars" is a common enough variant of the phrase that I just haven't heard before.
I can see why. Although the stars occupy a larger portion of the sky, they are also further away than the moon. So either version of the phrase makes sense in its own way.