Some feel that you lose your independence if you don't let your mind just wander where it wants to, if you try to control it. But that is not the case. If your mind is proceeding in the correct way, one already has the correct opinion. But if your mind is proceeding in an incorrect way, then it's necessary, definitely, to exercise control.
Dalai LamaThe great benefit of science is that it can contribute tremendously to the alleviation of suffering at the physical level, but it is only through the cultivation of the qualities of the human heart and the transformation of our attitudes that we can begin to address and overcome our mental suffering...
Dalai Lama