You get early inoculation against the idea of success if you're a poet. When I published my first collection of sonnets, I sold about five copies; now kids study them for A level. Wanting to be successful in that other world of money or fame is not interesting. Poetry isn't like that, and it never has been.
I can make 10 jackets of the same colour, same two pockets and same length, that will look like 10 completely different jackets when you put them on. It's about the way they are cut - it makes them look and feel completely different and move differently, and that's a never-ending study. People who wear my clothes will know exactly what I mean.