I almost always try to take a walk after therapy--5-10 minutes if that's all I have time or energy for, or ideally more like 30+ minutes if I can. A longer walk is particularly essential if the session has been on the difficult side. It helps tremendously to burn off a bit of any lingering excess agitation, and process whatever feelings I left off with, to get to the point where I can deal with people again.

After a walk... If I have more flexibility, sometimes I'll go to a favorite coffee shop and sit there writing or drawing for a bit. After the most difficult sessions, sometimes I'm extremely exhausted and will need to hole up at home and maybe take a nap, if possible.

Often I have to head back to work and bury myself in that regardless, which isn't exactly self-care but works out fine in most cases. If it was a difficult session and I wasn't able to take much time immediately afterwards, I'll sometimes try to block off some time to write and reflect once I'm finished with work. But most of the time in that case I'm pretty spent after work is finally over.