First of all, congratulations on sticking to your plan for six months. That, in itself, is an accomplishment. Second, don't look at these past three weeks as any sort of a failure. Sometimes you need a break when you've been hitting it hard for a long time. The important thing is that you're recognizing that you haven't given up, that you're still in this thing, by simply reaching out for encouragement. That to me says that you're still right on track, and you just took a detour. You've got this.
I yoyo'd around in the 270's for SIX WHOLE MONTHS after losing my first 35 lbs. At first I couldn't figure out what it was, but I finally realized it was because I'd become complacent in my weight loss method and needed a new 'challenge'...So this week I changed my method (in my case, from WW to Calorie Counting) and have already noticed a difference. I'm positive that by this Sunday's weigh in, I'll have broken through this loooong detour I've been on. All of that to say that you are not alone, that not everyone meets their goals within six months, and that the key is to never give up.
I'm stealing this thought from a quote I saw on "nicolejoy"'s signature earlier
but if you never give up then you never have to start over. You just pick up where you left off before
You've got this!!