There is no need for you not to eat everything you like as long as what you eat is in balanced amounts and in small portions. However there is one simple rule .. you know what it is .. we ALL know what it is ... the calories IN must be equal to the calories OUT or you will gain weight.
There are allot of over weight nail technicians. I was never over weight until I spent 9-10 hours a day behind the nail desk. My eating pattern was the worst it could be. I usually skipped breakfast ... had a high carbohydrate very fast lunch (usually sandwich and some crisps and a drink) ... would arrive home late to cook dinner (which I would pick at whilst cooking) and then sat down to eat it and then went to bed. FATAL!! I was also over 35 which is the point at which most have a metabolic change.
My problem was that doing what I was doing was not using up the calories I was eating ... I was so inactive. I have never liked sports anyway apart from tennis and swimming. The gym?? Forget it .. I hate it and wish I didn't but I find it all so boring. So it went on bit by bit while I hid behind my desk until I emerged to find I was trapped in this body that wasn't mine!!
Long periods of not eating followed by a big meal is very bad. Skipping breakfast is very bad. Eating helps you to loose weight and boosts your metabolism. Eat 5 times per day. Maybe a piece of fruit for breakfast followed by a yogurt at 11. Then a nice lunch BUT make it a
half a sandwich of meat and salad around 1.00 then something around 3.00 (maybe the other half of the sandwich) then your evening meal should be light and contain meat and veg and a small amount of potato or pasta or other carb. and not too late in the evening. If you are going to eat really late,then make the meal very light. All real food (nothing processed). My rule is: If it did not grow that way then don't eat it. No dried soups or bottled sauces.
My neglect of myself and my ignorance of what I was doing to myself led to a barriatric bypass 2 years ago to loose the weight I had put on and which had got out of control. Now I eat regularly and anything I fancy but in small amounts. Everyone should cut down the amount they eat if they are working all hours behind the nail desk ... hopefully you will not have to resort to surgery to loose weight .. it is not the easy option.