Family environment since childhood and parental care have deeper and greater impacts on the way child becomes a man. 

They say, there can't be a better university than the home and there can't be better teachers than the parents. This speaks for itself.

How to deal with failure is the vital thing which one should learn. People who don't learn it face problem in future.

That 'Failure is nothing but delayed Success' must be injected into the minds of children. There is no achiever who never faced a failure. Thomas Alva Edison faced several failures before hr invented Electric Bulb.

There is always two faced sword while dealing with children as in order to make them brave if they are left to face all uncertain circumstances, then they might fail and that could affect child psychology in long run.

Parenting is no less than a tight rope walk. Lot of discretion has to be used.