My T takes nine weeks off this summer, and I'll be away the first week he's back, so I get a ten-week break. Next week is the last week before he leaves. It's tough. But it would be tough even if he only took the absolute minimum vacation, especially since I see him twice a week. (To forestall the obvious comments: no, seeing another T during the break would not be possible, and no, I don't think it is at all unreasonable - I would expect a T in this country to take at least six weeks off during the summer, and nine weeks is a long but not outrageously long vacation.)

I have made a plan where I have something different happening each week: a trip, or a work project, or a hobby/personal project. I plan to brush up on a couple of languages that have receded to the back of my head, and I have some work things that I would really like to do over the summer. I'll be working in July, and will certainly be alone in the office, so I'll get a lot done I hope. I'm aware of the danger of planning to get too much done, though - if I plan to do fifteen things and only succeed in doing five I'll feel like a complete failure, even though I know that a year ago I wouldn't have been able to do even three of those things.

Other suggestions from other people (which don't necessarily appeal to everybody but have worked for other people in the past) include doing something nice for yourself at your normal appointment time, exercising (but be aware that exercise is not a mood booster for everybody, and if it doesn't work for you it doesn't make you abnormal), keeping a journal. Some people find that being around others helps, some people prefer to withdraw - whetever works for you, and makes you feel better, is probably good.