Lost their support group after hitting their goal?

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I'm very close to reaching my end goal of 175lbs, but I couldn't help but notice, ever since I got close to my goal, my support group just vanished. Since I've lost this support, I finding that I'm plateauing just shy of my goal as I don't have that extra push.

What concerns me the most, is after I do reach my goal (slowly), what will be my driving motivation to stay there?

I don't mean to come across as a whiner, I'm just looking for some insight if others experienced this, and the steps they took to keep themselves motivated.