Our subconscious mind merely follows an instruction that our conscious mind tells it. Think of it as soil. We can choose to plant good seeds or bad seeds. Whatever we sow, we will reap.
If we keep telling ourselves that we are not good enough, not connected enough, not lucky enough so that will be. If we tell ourselves that I can solve difficult problems, that I can put connections together that no one else can, that people want to help me, they want me to win, then so it will be too.