How Can Weight Be Reduced?

hello there, this is anj, i used to be very fatty till the age of 27 with 67kg weight, after that somehow i reduced upto 42 kg, it remainedonly for 2 yrs but now m back into 67 or may be more , so much frustrated dont feel good to do anything moreover have become lazy, wasn,t like that 2 yrs back even if i try to reduce it doesnt work nor it helps me, altogether i have become hopeless regarding fat bady, feel very upset. cant wear my favrt outfits and all. what shall i do on top of that am food loving person i get out of controll if am having my favrt thingy. without any second thought. please help me out thankyou.