Hi kray bray may, first of all really good on you in taking the steps you have towards your dream career!!
And the things worrying you.......not to undersell the worry at all, but that/some worry is a real positive sign.......it shows that you're driven, and that can help you no end.
But the "not doing enough", the "not trying hard enough"..........you're putting a lot of pressure in your corner there........no reason others shouldn't be helping, that's what some of them are there for.........talk to people on the paper, ask them for ideas, discuss........it might boost their interest and boost/refresh some of that passion/that drive for you too.
And if it does turn out to be too much with the studying as well........then you can always look at taking a different position on the paper at some point..........that goal of yours doesn't have to be achieved in the next year, two years, five years..........it really doesn't!! And there is going to be plenty of time to change that IF needed/IF you want to.
And the classes........the assignments..........maybe you could talk to your tutor for some support?? Maybe you could look at a studying "programme" that suits you better e.g. when, how, where you're going to study/do assignments..........and things to help with that e.g. relaxing or stimulating activities to help you with that..........and things you can do to alleviate some of that anxiety.............??
And the therapist.........it's really good you gave that a try
And you know, talking about really personal things with "a stranger" can sometimes be very uncomfortable to start with/for a while until you get that relationship going with them, if they're the right T for you
So well done on giving it a try.........just try not to let that experience put you off hooking up with a T if you need to..........sometimes given time, given the right T it can help a lot.

Alison