I also have had braces twice-- I wanted to add that you MUST wear your retainer for the rest of your life if you want your teeth to remain straight. Your teeth will migrate back if you don't take this part seriously. I am so thankful for my nice smile, I don't mind. The best food for me was peanut butter milkshakes. Plenty of protein and nice and cold. Use smooth peanut butter 

I still have a hard time eating things- like biting into a thick burger or sandwhich. It will even hurt when I eat crunchy cereal. I will have oatmeal right after an adjustment.