Young Gru: Mom, someday, I’m going to go to the moon.
Gru’s Mom: I’m afraid you’re too late, son. NASA isn’t sending the monkeys anymore.

— Despicable Me

There is a balancing act that every parent goes through.  First, you want to encourage your children to succeed.  Second, you want to put your foot in their backside when they stop trying.  Third, you want to keep their expectations manageable.  The last thing you want to do is lay one of the three on too thick and either hold them up when they should be moving on their own, push them too hard, or crush their dreams.