Just to let you know I have been dieting since Jun 2016. So far I have lost 3 stone. I have another 1.5 stone to lose to get to a healthy BMI. I feel so much better and have dropped 3 dress sizes from a 18 to a 12. I have a feeling I will end up a size 10, because that is where I was before I put on weight.
So how have I done it? Writing down the calories I eat, cutting out alcohol and since Jan 2017 going to a slimming club that tracks your weight. I usually lose 1lb a week, a slow and steady progress that doesn't make me feel hungry or deprived. I appreciate giving up alcohol isn't for everyone, but keeping an eagle eye on what you eat does.
Good luck, don't give up