I was seeing a psychologist for quite sometime until a few months ago, but I don't think I got the best of it to be honest. I kept telling myself that it helped, but it didn't. I wasn't really honest than I should have been or maybe because I wasn't saying the things that were wrong with me. I don't know.
These next three months are going to be batshit crazy for me (School Production, Completion of work, Exams) and I don't think I ever had the mindset for school. I wish I got out of it before I got stuck.
Sorry if I'm rambling and you might have heard of all of this before, but I am never open to anyone about it and that's probably a major issue too.
Agree with what Ashspet has said. I know what you are going through at the moment- I went through it last year and my sister is going through it now. This time of your life (ending high school and going onto the next phase of your life) is scary and uncertain and at some times horrifying, but you do get through it. I know there may be other issues underlying this, but normally this tends to compound things. Just remember that millions have been through this phase of their lives too- I bet a lot of them were going "Oh crap, what do i do, how do I handle this?" too (I know I was).
Agree with ashspet on confidence too, but I also think confidence comes from knowledge- not necessarily knowing what you want to do next and being assured that it is the right thing, but knowing what your options are and having knowledge on them. Anybody can wade into a situation and make a choice and think they are doing the right thing, not many can do so after researching their options and weighing up the positives and negatives.
Don't ever dwell on your decisions too- getting upset/angry about staying at school is only going to serve to lower your confidence and make you doubt your ability to make decisions in the future. I do it as well, but I've learnt over time to just go "Well, I've done it now, I can't change it, but I can make it into the better decision!". And you know what? I've made some really shitty decisions in my life. Some of them were so bad I'm surprised I canme out of the situation alive and with my sanity. But the way that I handled myself afterwards and used them to actually make myself better is one of the things I am most proud of about myself- I feel that I wouldn't be as good a person without making those mistakes. So yes, you will make crappy decisions through life, but you can turn them around and actually use them as a positive. And knowing that makes being confident a helluva lot easier for me.
As far as everything being crazy over the next few months, just take stuff a day at a time. And for me, that doesn't mean just planning for today and forgetting tomorrow, it means breaking down my problems/deadlines into little chunks and tackling them day by day, with future goals that I know I can achieve and put together to complete my tasks. In the next 3 weeks, I have over 10 assingments, projects, etc to complete. I don't think about the ones that are due at the end of that period yet and freak myself out- I have stuff due Monday and Tuesday, so that's my focus. It will be easy to complete today, and then tomorrow I can owrry about the next thing. And don't let yourself get bogged down by future events- every time I think about what I'll be doing this time next year, I freak out. But that's in the future, I'll deal with it then. For now doing the best at what is now will position me well for those future events.
I know that is a huge ramble, but it's just what I have really learnt over the past few years. You have all of us here to talk to, if there are people on here you feel you can open up to, use them. Everybody on here will help you out if you need it. Heck, I talk about really secret stuff to my cat rather than my parents, it's natural to not feel like opening up about all your issues. But find different people that you can talk to about different things, and eventually you will feel safe enough to let it all out. And that feels great, trust me