I can really relate, IndestructibleGirl.
You didn't make a mistake for posting this experience and your thoughts/feelings towards it.
I understand what you're saying ~ but you aren't weak without your T. Rather, your T has done a great job & you're thankful! At the same time, though, it sounds like you're a little scared to let go.
Unless your T has said that the end is coming, I would try not to worry about that right now. Instead, focus on now. Getting even stronger and more self-confident in your abilities. You will eventually reach a point where you both agree that letting go is okay.