I'm 5'4", and ranged from 11st to just over 13.5st in the past 12 years or so.
When I married, I fitted a size 14 wedding dress. After marriage, I wasn't exercising as much (bus rather than bicycle to work etc) and eating more (enjoying cooking for 2). Within about 3 years, I was up to a size 18 (pushing 20) and needed to lose lots. I lost a fair bit (not as much as my goal, but mainly size 16 and a fair few 14s in my closet). I have since gone up and down a bit as life changes (including 1 DC). So I have been overweight for my height since I was a late teen, and hit the clinical definition of obese a couple of times (but usually relatively healthy and fit even when heavy).
In the last year I have added a lot again (reached 13st, now back to 12st10) as DH has been travelling a lot, DC is being assessed for poss SN, work has been super-stressful, and I was drinking more than I had been (not getting lorried, but a glass of wine with/after dinner most nights rather than just weekends) and relying more on convenience foods (including sambos for lunch rather than salad, and pastries for brekkie at my desk rather than fruit or muesli), and not getting to the gym (for a leisurely pootle in the pool - nothing madly strenuous or sweaty :) ).
I am back to making an effort again though in the past month. I have made my salad (bowl with 2 carrots, half a pepper, handful cherry toms, few olives, and some lettuce, occasionally some avocado, hummus or cooked meat, no dressing cos I'm odd like that) fairly regularly now for the past 3 weeks again. I have managed to get to the pool once a week and I am aiming to increase that to at least 2/week this week (and try to do more lengths when I am there). And cutting down on the wine (empty calories) and the junky foods.
It's tricky, but I am trying to get life back into balance again in general, and that tends to help with controlling my weight. I know I eat bad stuff when I am depressed, stressed and generally feel bleh. I am trying to be better about not eating mindlessly, and making sure that I have options for (relatively) healthy snacks available when I need them (like flapjacks in the car and bowl of fruit on office window for when I have manic days and have to skip lunch, and remembering to make a salad so that I can eat as I work if need be, rather than grabbing a pastry cos that;s all the canteen has left or crisps from the machine cos canteen is closed). And being more careful about planning a weekly menu and keeping an eye on the diary while doing that (so I can take a batch of spag bol or curry from the freezer for manic days to reheat and just boil rice/pasta, or even have somewhat convenience foods for really manic days like oven chips and sausages/chicken kievs for oven rather than full blown fat-fest takeaway, and the ingredients in for proper healthy meals from scratch the days I have time).
And I am also trying to remember that it took longer than a week to hit the hips, so it will take longer to come off too.