New & need motivation. Will motivate in return!

Mmmprotein

Hi there, I'm new here. I've started Fitness Pal before, but stopped... so I'm hoping that joining the community and posting and keeping in touch with people will make me stick with it!
I have an August 15th deadline that I want to lose 10 lbs for. On track at the moment, but as has often happened before, I'm afraid I'll slip and devour a family sized bag of chips in front of Netflix some evening... and then every evening. I'm usually good with meals and moderate exercise, but every so often I have a junk food binge and that's me off the wagon.

Anyone else have that problem? How do you maintain your willpower?