I think sometimes it's useful to be very honest with yourself. I have tried all sorts of diets, very successfully whilst I'm on the diet. I become almost evangelical about the particular diet. Then, when I've lost the weight, the bad habits creep back in and the weight goes back on.
So I'm now changing my way of thinking - starting with being absolutely honest. I am not prepared to give up the odd plate of fish and chips. I am not prepared to have to think ahead when I go out for the day - if a sandwich is all I buy for lunch, I'll have it. I don't want to cook separate things for myself and the rest of the family.
So...I'm now only having half a sandwich when we have sandwiches at home or I'll give DH/DS half my sandwich if I buy one when we're out for the day. When I do a curry or spag bol I'll do all of us half the amount of rice or pasta that we would normally have then add lots of veg. I always weigh rice or pasta as my sense of portions is rubbish! If we have fish and chips (as we did during the Easter school holidays on a trip to the beach) I'll buy a kids portion. It's the flavour and texture I enjoy - not the amount - I've come to realise. I'm only 5ft 2 inches tall, I don't need a full portion the size that my 6ft 1 inch DH can plough through. I can always buy something else if I'm hungry. Again it's the being honest element. If I buy a full adult portion, I'll eat it. Not because I'm hungry but because it's there. It's the 'need to finish what's on your plate' mentality that my parents had coming through.
I also know that later in the evening, watching TV will often mean I'll nip into the kitchen to get a piece of toast or a snack. So...I bought one of those under desk bikes. They're just the pedals and counter mechanism of a stationary bike without the saddle etc., You sit wherever you want and use it. So I sit on the sofa and pedal for an hour. The calorie counter says I go through 300-500 calories. I take that with a pinch of salt but I'm moving rather than just sitting, I can't nip out to get a snack without making a conscious decision to stop and I enjoy it.
Over Easter I enjoyed half an Easter egg with DH and had a hot cross bun each day. But I cut back on other things - probably not enough to cover the hot cross bun but still better than not cutting anything out!
I've lost almost 7lb in just over five weeks, I'm not missing anything because I'm eating everything - just not as much as I usually do. If I want a bag of crisps I have to swap something for it because I know I over eat so I'm being honest and trying to work with the way I am.