if you're an artist or really anyone that has had success in marketing themselves and conducting business - what books or advice have been the most helpful for you?

please share resources

I've been joking a lot, but it is disheartening to see people attribute numbers and success to a luck mindset rather than a purposeful planned approach to growth(this doesn't always work - see my garfield manga)

but I'll share some stuff, even if it's lame that has helped me

This series by Derek Sivers was a huge eye opener when I first listened to it, I can't remember everything he said in this series, but at the time I heard it it changed my mindset quite a bit