Books.

If you are feeling overwhelmed with fear and self-doubt, unable to take action:
War of Art by Steven Pressfield.

If you are feeling that you are not consistent enough, that you could do more:
The Practice by Seth Godin.

If you'd like to be more creative and create magic:
Big Magic by Elizabeth Gilbert.

If you want to break through your fixed mindset and start exploring possibilities:
The Art of Possibility by Ben & Rosamund Zander.

If you are doing good work but are unable to find people who'd buy what you make:
This is Marketing by Seth Godin.

If you want to build good habits and leave bad ones but are unable to do that:
Atomic Habits by James Clear.

If you are tired of the hustle and taking the difficult path for everything:
Effortless by Greg McKeown.

If you are not sure where you are going with life or career next:
Designing Your Life by Bill Burnett and Dave Evans.