I have a few things about T1 for the best thing... I can't list one event but I'll do in general.
T1:
Pos: Being ever cogniscant of our bond, especially using gentle comforting touch like stroking my hair or holding me and taking deep breaths to help me do the same and reminding me to call on those experiences to keep a connection and grounding feeling for no matter what I am going through.
Challenge: There have been moments (many in the start) of contention but on a regular basis the hardest is when she starts giving me ideas for practical problems when I'm already overwhelmed by thinking about them and need her to go slower. I ask her to stop sometimes and feel so awful - she is smart and has great ideas but at times I've gotten overwhelmed.
T2:
Pos: Supporting me with my art, and taking ~40 pieces to a training she held, and displaying two large ones framed in the main wall of her therapy room. She gave me the canvas for them and trusted me to create. Without her I could never have done my gallery shows because I had so much fear of exposure.
Challenge: Changing her out of session contact with me after a giant several month long rupture after her stuff got in my therapy. That doesn't happen anymore.
Good questions