It will not do to merely exercise control over your senses. You should also harmonize them. According to Patanjali, yoga is the control of wanderings of the mind. However, such control of the mind is most difficult, if not altogether impossible, to achieve. The appropriate and easy method is to achieve mental harmony or balance. Concentrate on what is good; then you will automatically keep yourself away from what is bad.
(Summer Showers 1990 : 4)