The biggest stupidity of all

I believe it was Albert Einstein who categorised the greatest stupidity of stupidities with the following statement: "The purest form of madness is to do the same thing over and over again but expect different results". Let me be a little provocative at this point. Aren't we all, at least sometimes, a little "stupid"? Stupid in the sense that we don't achieve our goals, be they professional, personal or, in our case, our goals on the golf course, with certain actions and ways of thinking, but we don't change anything, stick with these actions and ways of thinking and hope that something will change.