Calorie deficit. I lost two stone in 10 weeks.

I kept it very tight and essentially just had a banana for breakfast, soup and bread for lunch and then a decent dinner.

I basically did that Monday to Thursday and Friday - Sunday was a lot looser.

Small things like remove sugar from coffee, get a water instead of soft drink with a takeaway.

I also walked more but not a huge amount.

Edit: big thing is consistency too. Don’t expect results until maybe 3-4 weeks doing this. Once you see the pounds drop it’s severely motivating