Messing up later in the day...

Save more calories for later in the day. That's what works for me.

What's helped me so far is eating lots of protein rich foods/snacks throughout the day.
I've always been such a carb binge eater so instead of eating mostly carbs I've incorporated way more protein in my diet and have noticed a huge difference in my appetite.
In the past I would always stay within my calorie goal until after dinner where I just felt hungry and would go overboard on snacks and sabotage my efforts. Now I almost never feel hungry because I'm making sure I'm reaching my protein goals during the day.