With having read this whole entire post and really contemplating on what you are saying or what I interpret to what you are trying to say, this is the most least egotistical post you have made. And I mean that as a good thing, even if it sounded a bit back handed.
At least you have the understanding of this now. There are so many people that quit school/university trying to become the next Durrrr or Raptor when they really need to just come to the grips that it's not going to happen and being an average or an ordinary person in society isn't a bad thing.
There is a general public for a reason.
I don't think that going to therapy or talking to someone would be something people would see as weak.
That's why they have hot lines and organizations who can help when you are in need.
I think no matter how old you are, you get to a point where you think to yourself, what am I doing here? Where is my life going, and how did it get to this point so fast?
I went through that stage and even though I'm happily married I'll be staring at the wall/out at space and just be thinking, this isn't even what I want.
And this my husband will do something and it will clear the doubt out for a bit, but I don't think someone can ever be 100% sure of themselves.
And that's where the insecurities and questions come in.
Aren't university courses just 3 years over there? I researched when I went to college years ago and was thinking about going abroad so I was just wondering for some clarity because I'm curious.
And I don't think you are ever too old to go to school.
I can't really tell you what to do because I don't know what is going to make you happy in the end, when you don't either. It's your own decision and it sounds cliche to say you have to follow your heart, but you kind of do.
Just remember you only get one life, so do things while you still can.
That's all my advice and I was being 100% sincere so I hope you get that and that, that came across.
Gl mate.