Well, Hello Hilarious!
I too just returned from a year long hiatus. I am actually the heaviest I have ever been in my entire life. The harsh winter and bout of severe pneumonia have contributed to it.
We are similar in that I also have Major Depressive Disorder and binge eating.
My experience with yo-yoing with my weight is this: I went down to 150 my junior year of college. No idea why. I didn't actively change anything, but I naturally started eating better because I moved in with someone who liked to cook healthy meals. I gained it all back since then. I have been trying to get back down to 155, but it is much harder this time. I don't know if it is because I regained, and there are also many other factors (couldn't work out, depression, binge eating) that were not active at that time of my life.
Right now, I am also counting calories. I am not even really restricting anything yet, just watching to see what I eat. I have been recording my food faithfully for 5 days now.
The challenge is to stick with it.
I don't run because I am afraid it would be too hard on my body, but I had a friend who lost a lot of weight from running.
Anyway, now that I blabbed on about myself, I want to say that I am so glad to see you here and I wish you all the best!!