Unfortunately, there's no easy way to get over this, as the problem is most commonly rooted in anxiety and/or depression.
Is there something that has been bothering you? Something that has been on your mind? Are you worried about something?
Whatever it might be, you need to tackle this problem before you can expect your need to eat to disappear. Eating is a distraction from what bothers people. This is why comfort eating is popular when we've been heartbroken or lost a job or any other horrible things happen to us. However, it is a bad habit and one that needs to be broken so you need to deal with the main issue.
Until you have worked out what that is, I would recommend making sure that you rid your home of foods that are high in saturated fats and high in sugar. It's a lot harder to give into temptation when the food is no longer around. Then, every time you feel the need to eat, force yourself to walk around the block. Go for a cycle. Do some form of exercise. Exercise releases endorphines (the 'happy' hormone) and as well as making you feel a little better, it will help you to stay on top of the weight you're worried you have gained.
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