A principle element in education is rejecting the saying “I can’t”. In fact, we are drawn to believe that “there is no can’t, but rather won’t”. That it is not a matter of not being able to do something, but of not having the desire to.
As such, the difference between can not and will not is of physically being incapable of and of simply not wanting to.
We are brought up to be certain that “can is an attitude”. It is like Star Wars’ Yoda said “Do or do not. There is no try”.
It is true, that the level of success depends on a person’s determination, their willingness to keep trying, to change things, to do more, to persist into achieving something positive.
Dean Graziosi had said that “if you tell yourself you can’t, you won’t” and similarly, Henry Ford stated “if you think you can do a thing or think you can’t do a thing, you’re right.”
Maybe it is all a matter of mentality. But every time we say “I can’t” for something, we should consider how much of “I won’t” or “I don’t want to” lies within it.