I can totally relate to feeling out of control with your food and unable to stop eating sugar. I used to have that same struggle, and would eat sugar throughout the day. I would binge on sugar, beat myself up over it, swear to give it up forever...and do it all again the next day.
This is now my area of expertise and something I am passionate about helping women overcome. I have a few very important questions you can ask yourself to help you get a handle on this issue.
1. Are you eating enough?
When we under eat, our bodies DEMAND food. And guess what, when our bodies demand it, we go for whatever is fastest, easiest, most delicious. This often means sugar, fat, and salt. So make sure you are eating a wholesome satisfying breakfast AND lunch to get you through the day.
2. Are you eating the right things?
That means including carbs, fats, and proteins, and lots of fruits and veggies. Oh, and it should be something you ENJOY. IT is essential that we are nourishing ourselves, not just getting basic nutrients. If we are depriving ourselves of enjoyment in our daily meals we will often seek it later in the day in the form of junk and treats.
3. Do you know your triggers?
People can be triggered by many different things. Over hunger, as I described above. Sight and smell, so you can avoid, say, pastry shops with large windows if this applies to you. Also learn your emotional triggers. Stress, bad relationships, lack of a relationship, boredom, avoiding unpleasant tasks, and many other things that fall somewhere on the "emotional" spectrum can drives us to want to eat. These can also be overcome with practice.