@amit shippie  
there is no substitute for hard work , castles are not built overnite  
u have to go to gym and follow a strict diet to loose fat 
divide ur meals into 5-6 small meals divided throughout day  
stop junk food and take a high protein low carb diet low salt with lots of fibres  
make ur diet chart of what suits u and what u eat  
in gym do cardio exercice and do little bit of wt training atleast 4 days a week  
take two body parts a day ( like chest triceps , back biceps ) 
that will help u to tone ur body  
btw if ur ht is 162 cm then around 60 kg shud be ideal wt for u 
i m 182 cm and my wt is 72kg