you are not a loser.
good on you for getting your commercial licence, when i had to go for a truck HR - rigid licence i had to do the truckers knot to make loads secure, i can't even remember how many times the instructor had to show me it was embarrassing but heh i do not or have ever pretended to be a genius . so go easy on your self.
to me if some one is kind and shows kindness they are wise, and if some one is wise they are successful.
as for dropping out of uni, most of the most successful people in this world dropped out of school.
you have not found what you want to do ,that is pretty normal.
how about you stop comparing your self with others, how about you just accept who you are, and work from there.
good luck with the job , i hope you get it.
take care