Do you have specific diet that you're starting? Simply cutting out processed foods like junk foods, sodas and other simple carbs will go a long way toward helping you reach your goals.
Center your meals around protein - meat, chicken, fish, eggs and veggies, as well as whole grains - and keep your portions in check and you will lose weight.
You should eat something light before you sleep, especially, if you're going to bed for the night.