What to do with spare time?

Hey,
So due to a few problems at work I have been asked to start taking some time off work. I will now be taking Friday's off each week, because I point blank refused to take 1 or 2 week blocks off.

This is for a few reasons:
1. I hate taking time off, as when I return to work it appears the staff that covers my work does a half-a##ed job, so I have extra work to catch up on.
2. I have literally no social life. I live alone, have no friends, and social anxiety and BPD make it hard for me to go out. Ever. Work is pretty much the only time I'm out of the house with people.
3. Being alone and without anything to do (while on leave) means I am alone with my thoughts far more than is healthy, which inevitably leads to a SH relapse and suicidal thinking.

So I suppose the questions here are, what do people do with time off?? And does anyone have any advice/tips for helping me with my thoughts??
I have an appointment with my psychologist in a few weeks so I'll speak to him too, but I was wondering if anyone has any ideas in the meantime.