When does that happen... Beats me. All I know is that the events of today are positives.
As far as holidays go... They are just another day. Really, that is all they are. So your birthday is coming up? Christmas? New Years? The BD date? You need to stop putting so much significance to these days.
Easier said than done? Maybe. It all depends on your mind set. I just had my first Thanksgiving in twelve years without my W. I spent the day alone. I kept myself busy. I went to pre-holiday at work. I made myself some of my favorite stuff to eat. I watched a lot of football. I kept my mind occupied.
If I hadn't done these things, i could have easily slipped into the bog of self-pity and wallowed in it. Nope. Not going to happen.
As far as the ice creams goes... I eat ice cream after losing a bunch of weight. I exercise moderation. Two small scoops instead of three or four humongous scoops. I eat pizza... two slices instead of half a pie. I don't have to deny myself food I like.
Neither do you.
I appreciate what you are saying. The holidays are about much more than not sharing them with my W. They are also the first holidays without my father. A time when I should be able to have the comfort and support of my W, but I don't. They are also a reminder of the family I hoped for and don't have. That is a lot to deal with alone.
I have been contacted by almost forgotten friends in the last few weeks. They check in with me every few days. I can pass an entire evening chatting with them. It helps.
I understand what you are saying about food. I do allow myself the occasional indulgence, in moderation. However, I don't think I get nearly the exercise you do. I've never been one for the gym and this time of year can wreak havoc with my outdoor plans.