I've been reading books such as "The Richest Man in Babylon"/George S. Clason, Listening to podcasts of Phil Town and read some of "The Automatic Millionair"/David Bach.
They were all shouting in big letters "Pay yourself first" this is an old concept of how to save money, it's like having your own retirement fund, but I think it has a strong lasting effect on your confidence and sense of peace in the 'hear and now'. As a once 'broke musician' I can tell that having moments when you don't know where your money to cover your rent, bills or food will come from is stressful, and it's not worth that panic attack and becoming senseless and lost or any other component of this stress. Building that saving and (even before that) finding safe and fun and steady ways to make money is I would say even #1 important in priorities. I think doing something we love for a living is a must. For me, waking up for the day bored and stressed is not worth living. What is living anyways? if we do not feel alive?