Keep a notebook. Travel with it, eat with it, sleep with it. Slap into it every stray thought that flutters up in your brain. Cheap paper is less perishable than gray matter, and lead pencil markings endure longer than memory.
Jack London

Keep a notebook

It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all, in which case you have failed by default.
J.K. Rowling

It is impossible