Well - I guess "smart" is just a word that's difficult to define. I think the definition used by the OP is something along the lines of being better at academical subjects, which clearly isn't your only criteria.

I for one used to be quite awkward, but had awesome friends that pointed out what (not) to do. Am I less smart for not having figured that out on my own? Perhaps, but I don't think it's relevant how skills are obtained.