Dont think like you are useless- then you really become useless.
Its called acting out a script that other people write for you. Try
to like yourself, that's important.
I think you just have to project confidence in yourself, in
interviews. Action first, then your luck will come. Cause sometimes
interviewers just want to see someone they can trust, someone they
can like. You project yourself as capable, outgoing, interesting,
they are going to like you. Of course, you must prep well for any
questions they will ask, even hard questions. Interviwers dont want
to hear negative responses, so, even if its the truth, turn it into
a positive event that changed your life.
Maybe I simplify things, but i hope luck comes when you embrace
life- so good luck!