My friend's weight is 120 kgs. she wants to lose her weight without any surgery. wat can she do?

First is diet control. Second is doing exercises. Third is eating only vegetables and fruits and do not take rice or atta or wheat. Everyday after getting up and face washing, stand in front of mirror about ten to fifteen minutes, chant any slokas with smiling and take oath that my weight is reducing day by day. In this case, you can see the changes within a short time.