Ie
Crisp - swap for flavoured rice crackers
Chips - swap for slimming world chips same with gravy and their stir fry sauces. They even do a curry one.
Custard - swap for vanilla no fat yoghurt
Ice cream - swap for breyers or halo ice cream. About 300 calls for the whole tub
Kebab - swap the dinner for chicken or lamb chunks.
Cake - google slimming eats and they do easy as fuck mug cakes
Pizza - have a look at lo dough. Whole pizza for less than 300 calories if you use 50% less fat grated cheese. You can't even tell it's a healthy pizza. You can make pasties aswell using tinned stewing steak and carrot and swede you can buy ready chopped.
Lo dough is amazing for me as I love pizza. I can still have one for me tea and lunch and not go over my calories if I wanted to.
Sugar - swap for sweetener
Have one day off a week but don't go fucking wild and have a full dominoes and a tub of Ben and Jerry's and two bottles of wine 
None of these little changes are hardships.
You need a set of electronic scales. Once
You start logging what you eat and how many calls are in things, you will naturally start to become wiser in your portion control.
I know if I want a Dairy milk in the afternoon I can't waste My calories on a bacon butty. So I'd have an egg white omelette with ham or turkey bacon instead.
You have all this support in this thread just for you and helping you to change something your unhappy with. Be a shame to waste it all and do nothing.
You can still be happy and not eat shit.
Stop seeing "comfort food" and unhealthy foods as a treat. It's really not. It's putting shit in your body that's no good for you. Unless you learn to do it in moderation.