Wow - that was hard work. Congrats!
I've been in a very similar position. My used to be OK with the occasional text or e-mail, and has now asked me to stop, unless it revolves around setting appointments.
It hurt like hell when she first told me. That there were going to be boundaries.
I am also busy learning not to make therapy my life, just a small part, that sets me up to tackle life.
I also have 2 parts to me - the logical one, and another. The Other I've always thought of as my Bipolar side, or more recently possibly my BPD side. But the more I think about it, maybe it is my child part. I am not brave enough to always voice my feelings and thoughts that come from my child part.
My child/other part would love to be hugged and held, and have continuous affirmations of how I'm cared for and loved. But I cannot bring myself to mention this in T.

I agree with Treehouse's way of handling e-mails. I did the same the other day. I am not meant to send e-mails, but was just in such a bad place, I was going to break that boundary regardless. I typed the mail and then left it in my drafts. I checked back a few hours later, re-read it, and decided not to send it. I'd managed to work through a lot of those feelings, and rather than stepping across that boundary, I thought I'd force myself to be stronger.

I commend you on being so strong in your therapy. You are a lot stronger than you give yourself credit for!