I can resist anything except free food

This has been quite a trying week on a diet front.
First up the facts:

Weight: 88 kg
Height 1m69 (damn, still haven't grown)
Waist 87cm

So no real progress although I had eaten already when I weighed myself and my waist may have shrunk a tiny bit.  This is not really a surprise.  I still haven't bought myself any chocolate or treats, so maybe I've cracked that one at least, but will power is letting me down when presented with free food, and I haven't been able to step up the exercise yet.

We had guests over the weekend and although I wasn't "bad" exactly we went out for dinner with them and then had a few drinks etc.  While I am within my own sphere of influence I am doing fine, but things get out of control when other people who are not "in" on the whole diet thing are involved.  I suppose there is a lesson here - get everyone on board so they don't tempt you.

We had a shared morning tea last Friday and I diligently made myself a whole pile of carrot sticks to go with dips.  It was the only remotely healthy thing there and while I ate my carrot, there was so much baked food there I couldn't say no.  I took the stupid mental leap that it would be ok to have a selection of cakes that people had made instead of a healthy lunch.  I might have to just not go next time.
Again I have been plagued by work events: I had to work Monday evening (sandwiches provided after which I went home and had dinner), then I've had two lunches this week so far and another tomorrow... I feel I am making excuses here, but it really would be very difficult to eat healthily when food, not of your choice is provided for you.

Anyway I have NOT given up.  Far from it.  I just need to be more creative.  My work commitments look to be lightening a little bit so hopefully I can regain some control and also, vitally, be able to get home early enough to go for a run or to one of the exercise classes I've found at the local leisure centre. 
First I need to get through this weekend.  We are going to Queenstown skiing for three days.  I anticipate it will not be good on the diet front.   There are some heavy drinkers in the party and I can't see being able to avoid a few sessions plus we'll be eating out the whole time.  On the plus side I should have some good photos from skiing next week...!