Haha! Don't stress out. We all have those weeks. Yep, you gained 3 lbs, BUT work out twice harder next week to lose them!
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ou know what may help, if you will get two jars. Fill one with 50 marbles. The other leave empty and every time you eat something healthy, put one marble in the empty jar, and once you reach 30 or 50 ( it's up to you), treat yourself with 5 cookies, or one piece of cake, or a bit of fries or something you enjoy eating but can't eat 'cause it is sweet! Or reward yourself with a visit to spa salon or similar. This way you will be motivated. And every time you eat something unhealthy, take them away to "punish" yourself
The other thing that may help if you shop with someone you know. Ask them to slap you everytime you try buying something sweet. Your face will be red, but it worth it