Being on a diet makes u eat more

Have u ever notice that when u start a diet and everything that u usually don't have, you crave. Its like your saving every last thing on the planet and then you'll finally commit to yourself saying "ok. Now that I've had those snickers , that i haven't eaten in 3 years, I can start my diet". But then there is another thing and another...Its like Im  scared of never eating anything sweet or salty or fattening ever again. Im afraid of that!!! i don't know why. Food does have that hold on m. Its makes me feel good. When Im stressed or bored, sad, even happy. Its an emotional thing. Im an emotional eater. lol Regardless of what type of diet im apart of, it wont work unless i figure out why i need food to live...