If I remember right, this kind of assessment is to make sure you're informed of the negative side effects and implications of HRT, and are ready to face them or not.
They might ask you things like:
Has anyone in your family ever developed breast cancer? Blood clots?
Are you prepared to accept the life-threatening risk of Venous thrombosis?
Are you ready to become sterile and never have children (unless you bank your sperm now)?
How do you feel about "irreversible" effects like breast growth?
Are you aware that you must take hormones for the rest of your life?
Or they might try to tease this kind of information out of you in a therapy like session.

If you read up on the risks before your appointment, and bring a lot of confidence, you'll probably get to HRT quicker.