Ready for the holidays to end

So even though I only have 23 pounds to go, I'm having trouble staying motivated to get it done. Every time I see a friend from high school who has lost all their weight I get jealous and discouraged. I always seem to forget that I have made amazing progress and just need to stick with it. My diet has been screwed up ever since I went home for the holidays, I have got to fix it before I go home again and when I do I need to stick with my diet while I'm at home. Gonna drop my calories down really low, probably lower than I should which isn't healthy, but at this point I'm willing to try anything. Current weight: 143