I think an elimination diet could help but it may not be the first step. You could focus on first reducing, then cutting out food groups that generally tend to have a strong influence on the pleasure centers of your brain such as sugar, gluten, and dairy.
It's important at the same time to add in foods that support your body's processes at a cellular level such as dark leafy greens, berries, and healthy fats like nuts and seeds or wild-caught salmon so that you're left feeling satisfied.
If I were you, I would start with refined sugar, then gluten, then dairy.
Hope this helps!