I've lost about one and a half stone in the last year. It's been slow but steady - not a crash diet.
How? By cutting out one ingredient: processed sugar. I haven't restricted my diet in any other way. For two months (Jan -Mar this year) I ate a big bowl of popcorn every evening
I've just eaten what I fancied.
Sounds easy, but it's bloody difficult because processed sugar is in everything. Not just sweet things, not just ready meals or tinned food or packeted food, but in stuff like tomato ketchup, bread, stock cubes, flavoured yoghurt, twiglets (gutted!), flavoured crisps, pies, anything with a bbq flavour, anything with a fruit flavour, things that've had something done to them (e.g. spicy beetroot, sold in the Fresh Veg section alongside ordinary beetroot), almost all breakfast cereals (including muesli, Wheetabix and flavoured Shredded Wheat), even things that say "All Natural Ingredients" or "Made to a Traditional Recipe" will likely contain processed sugar.
And in fact I'm not 100% sure if the weight loss is due to losing the one ingredient or to the change in my diet from convenient to self-made foods.
However whatever the reason, that weight has gone since cutting out processed sugar. So if you want to lose weight *just* cut out the processed sugar