Therapy took me awhile to get used to, too. Think of it as feedback. You say something, and you aren't always sure what you meant, the therapist will gently give feedback. Think of it as being mentored. You've never had proper mentoring-- a good therapist will show you what you should focus and work on, and how to work on it. They'll explain why you feel the way you do, if you ask in a way they can answer. It's like being mothered, taught, supported, all by a neutral non family member. You'll understand, with time, why certain situations set you off, and how to deal with those moments.

Therapy gave me the courage to forgive myself for being imperfect. It's a constant learning process! I'm still learning "triggers", even after 30 years of therapy. (Don't get discouraged it's been an interesting journey and not all bad, really.)

Ask if you can get a therapist with experience in youth, it's worth asking, anyway.

It's ok to cry in therapy but not mandatory, but it's more than fine if you do.
Just as fine if you don't.

They'll ask a lot a basic questions at first. Your entire first session might be general questions. DONT GIVE UP if they do!! This is very helpful and even necessary.

Let us know how you're doing?