I don't do anything to "reflect" so much, but after hard sessions, I have come up with something that is helpful to me (as I usually have to rush back to work after the session).

First, I make sure that T knows that whatever we are talking about is very emotional for me and I will need some "putting back together." When I can anticipate it, I tell her at the beginning of the session so that she can plan our time accordingly. Then, for the last 5 minutes of the session, we do some sort of relaxation/breathing/meditation with the goal of relaxing and grounding myself. After the relaxation, I tell her, "Okay, I just need a little small talk now." We then discuss things like what my plans are for the weekend, a good book she's read, etc. for just a few minutes. Then we hug (as is our custom) and I leave.

I don't know if it would work for you, but I find it helps me seal in the work from the session and get in a mental space where I can face the rest of my day.

Best,
EJ