I couldnt seem to stick to any diets becasue I love my food too much. For the last few months though I have been steadliy loosing weight at the healthy rate of about 1-2 pounds per week. This is how:
1- exersise everyday for at least 30mins. I sounds like a bit of an effort if your not used to exercise but its actually really easy to incorporate exersie into your routine. I go for a run first thing in the morning which is a great way to start the day, but it could be easy as doing star jumps while watching TV in the evening.
2- Start doing exercises to tone your muscles. There's loads of info on the web on how you can do this at home and it will increase your metabolism meaning you burn more calories each day
3- Downsize your downfalls i.e. when I want chocolate I have a child's chocolate Freddo instead of a normal bar, cutting the calories by a third and still satisfying my craving
Hope this helps, its worked for me and is sustainable.