Wow! I am so positively impressed by everyone's openness and okayness with going for extra-long and multiple sessions per week when times become especially difficult, whether the reason for them being so is known or not.
For me, I've learned to "get the most bang for my buck" with my t by:
1) Making a note of what I want to work on in the session. I don't make it too long, but just enough for me to remember what thing(s) I wish to address. Sessions often digress from the topic I thought we'd work on, but at least I enter the office with a direction rather than having to spend half the session figuring out what to work on
2) I arrive at the office at least 1/2 an hour before my session so I can get as grounded, centered, and calmed as I can before diving into the hard work of therapy.
3) In my non-therapy times when I become overwhelmed, I picture a miniature version of my t sitting on my shoulder (like Jiminy Cricket in Pinocchio) and I imagine what, how, and the facial and bodily expression my t would use to communicate to me. (Harnessing my very active imagination for good things rather than the terrible things it often does.)
Take what works for you and leave the rest. We're all on such individual journeys in life that not all tools work for everyone. I'm glad, however, that we have this forum to share our common threads.