I know, I do understand I have been there myself and felt all of this. The best advice I can give you is to just try and stay positive, when you feel you are not doing anything to move forward, tell yourself about your therapy that your doing so that you can be in a healthier place when you do come to transition.
Transitioning is the hardest thing anyone will ever do in life, although at the same time one of the best things. It is a long, hard, complicatied, emotional journey that doesn't happen overnight and the best way to do it is to take small baby steps at a pace only YOU are comfortable with. If you have other issues alongside GID, therapy is the best way to learn to manage them before transitioning, as doing both simultaneously will just be too hard on anybody.
It is all about taking small steps, you will get there in the end, I promise.
I suggest you speak to somebody about this not sleeping, see if somebody can get you some sleeping tablets or lots of warm milk before bed.