Diet controls our metabism and psychology or in other words it is a manifestation of both. choice has to our own but we should know what is good and what is bad.  have abundant  fruits in breakfast and in evening.  stop milk and milk products.  stop packaged foods containing harmfully preservatives. stop refined foods like sugar refined oil maida etc. In lunch and dinner have abundant vegetables salads sprouts pulses. have less of roti/rice etc (one to two in a day for sedentary lifestyle persons) avoid junk food restaurant food etc. have less of spices and salt.