The quote "Shoot for the moon. Even if you miss, you'll land among the stars" is a popular saying that encourages people to aim high and strive for success. It is often attributed to Norman Vincent Peale, a self-help author and preacher of positive thinking, who was inspired by the space race between the US and the Soviet Union. Another possible source is Les Brown, a motivational speaker and author, who also added "If you miss, shoot again". The quote is related to the concept of setting SMART goals, which are specific, measurable, assignable, realistic, and time-bound.

I hope that helps!