Actually, it's the rest of your life! You need to start weaning yourself off all that bad food. Why exactly did you fall off the wagon, is it because you were at home ? Was the missus putting bad food in front of you or was it just because it was in the fridge? If the former, then you need to convince her to stop. If the latter - then yuo need to audit your larder and throw it away now so it cannot tempt you!

Rather than concentrating on not eating bad stuff, you need to concentrate on eating so much good food that there is no room left for the bad stuff