Haha putting salad in a chip butty wont make it healthier! You're still eating the crap. As the saying goes, you can't polish a turd! Although the salad will give you vitamins and minerals which are nice the butty will still make you fat.
I cut out chocolate, alcohol, coffee, fizzy drinks, sweets and smoking last year. It's been tough...You have no idea how addicted you are to suger until you try and dump it! It was tough but I'm past it now. Give it a go it really makes a difference. Go cold turkey.