NikNak - you know the answer to your original question - there is nothing else apart from burning more calories than you consume. And it takes willpower to make that happen.
Atkins-Smatkins.
(On a more positive note - the idea of going to the Gym or jogging personally fills me with dread, but playing football I enjoy. I'm now back playing 5-a-side twice a week and can eat & drink pretty much what I want. If your favourite sport is darts though, that's not much help).