Hi
It is not possible to reduce ur weight without eating anything because if u not eat anything then ur body stores fat in ur body & increases body fat & wt this leads to some health problems.
Combination of diet, exercise & life style modification is best way to lose weight.
Balanced diet should be include carbs, protein, fat, vitamins, minerals & water which contains right proportion.
Exercise; Do any cardio exercise for 45mins in a day.
Life style modification: Avoid smoking, alcohol, eating out(more often), stress free life.