Take the example of photographer. If the camera trembles in his hands, everyone will say that the photo will get blurred. In the similar way, every devotee wants to have vision of god through the camera of his mind. If hes mind remains restless, he cannot see God, he cannot have God-realization. So, out first duty should be to bring our mind under control.
-Shri SatpaljiMaharaj.
www.manavdharam.org