When I am in confusion, I tend to find a solution to it by myself and it works too. Later, when I google it, I realize that a few others have found similar solutions too. So, basically I was not reinventing the wheel, but got a solution that is common, but mostly by intuition. It can be adding a certain ingredient while cooking though I am not really aware that it could help, or probably adjusting the correct light while taking a photo.
Is there any word or phrase for this? Does common sense fit in here?