The problem once we start coaching our kids in an early age is that we are denying them to find a lot of subtle things out on their own.
It's very easy to think you are helping your kids to learn by removing what seem like unnecessary obstacles and of course sometimes you are. But a lot of the time it's those obstacles that build some sort of character in the kids and allow them to find out things by finding out things. By being too proactive as a parent we can take a lot of motivation away from them.
Our kids have bruises all over their body because they are allowed to do things other kids aren't. Of course we watch over them and make sure they don't do completely crazy things but they are capable of much more than one might think. By allowing them to find that out they will hopefully learn that themselves too.
Raising kids isn't a science it's an art. The art of creating a canvas for them but not decide what they want to do with it.
I think this comic shows one of the big differences between our parents generation and ours (I am 41)
I am always reminded of this http://i.imgur.com/LglSapk.jpg