It's all about people. It's about networking and being nice to people and not burning any bridges. Your book is going to impress, but in the end it is people that are going to hire you. ↗
It's about somebody initially knowing more about it than you do but eventually you learn a lot about it yourself and practise the skills and techniques that you've been taught. ↗
At the moment, in Britain we're facing such enormous cutbacks in education programs and music programs and art programs that you feel you are knocking your head against a brick wall. ↗