Alright, lets see.
1. 2011, first year out of school. I start university to do a bachelor of arts majoring in Japanese because I was into anime and all that. Quit after 4 weeks. In brief I'd say it came down to... having no real life experience which lead to me being scared of so many things, taking public transport to and from uni (I wasn't used to it and being on trains and busses for 3 hours a day was something new to me), meeting people in my classes, doing the work, I was so afraid I wasn't good enough to pass my courses that I ended up quitting because of it, being afraid of the debt that came with university (now that I have a job, I realised that the debt I would have incurred is ridiculously small and certainly not worth worrying over, this is in Australia).
2. 2012, semester 1, went back to do the exact same thing because I thought I'd be kicking myself forever if I didn't learn Japanese. Ended up quitting after the first day... I decided to go in doing 2 courses to help me ease into it, everything from the first time came rushing back and I thought to myself I couldn't handle it...
3. 2012, Semester 2, went back and started a bachelor of counselling thinking I wanted to help people, especially people that had gone through what I had as far as making life decisions. Ended up doing 1 course which was just a basic, how to do essays, presentations course. I actually ended up getting through it and it gave me a bit of a confidence booster. Half way through the semester I decided I wanted to do Psychology instead so transferred into Bachelor of Social Science (Psychology).
4. 2013 Semester 1, Went up to 3 courses, psychology course was boring, decided to do Japanese as one of my electives, found it fairly good this time and made a couple of nice friends.
5. 2013 Semester 2, Went up to 4 courses, psychology continued to be boring. Week 8 comes around and I've been getting to know some other people in Japanese more and we decide to start a study group. We end up being good friends and they really motivated me to study really hard and I found myself absolutely loving Japanese and that I wanted to go study over in Japan as part of my degree. I realised that if I kept with Psychology I'd have to stop doing Japanese after my 2nd year and I couldn't study in Japan. So what did I do? I transferred to a Bachelor of Arts Majoring in Japanese like when I first came to the university. I'm loving what I'm doing and hopefully I'll be hearing soon about whether I've been approved to study in Japan for year starting in September. At the moment, things are going great and I'm really happy with where I'm at. It was extremely difficult at times these past 2 years, especially the 2 times I quit, they were the hardest times in my life, the only times when I had no direction at all and it scared me so much. I've come a long way in the past year and for the longest time I can finally say I'm truly proud of myself for achieving something. Semester 2 is over with just the exam block to go.
All I can say to anyone in the position I was in is keep trying, try different things, it doesn't necessarily have to be university, it would be a job, a trade, an anything, just try. In the end, for me it was just about growing up some more and being lucky enough to meet the people I did and have the support from them. Just keep trying and don't give up, I can't say how long it will be before you find something but, it's the only way you ever will.