Struggling To Lose Weight

I feel bad for not losing the weight that I want to lose. I have been struggling to lose that extra 5 lbs I gained last summer and I am really really disappointed with myself for not being able to make it at this time.
I still have few more weeks to lose weight. Otherwise I will have a hard time maintaining the weight that I presently have because of the 2 weeks vacation from work. Oh God help me make it.