There are many wonderful writers on acting: Stanislavski, Sanford Meisner, Lee Strasberg, Keith Johnstone, Uta Hagen, Harold Clurman and others.
When you want to be inspired and enlightened pick up one of their books and open it anywhere.
Read until you get bored and then put it back on the shelf.
These best books on acting can be read cover to cover but be careful you aren’t trying to learn how to act by doing that. The ideas in these books will support the practice and experience you have had as an actor. The experience comes first and is most important; the ideas follow and support that experience.
These classic texts can be picked up and opened anywhere and the passage will usually be interesting.
Occasionally you’ll find you want to read one of them from cover to cover. Wonderful. Terrific.
But don’t try to remember or learn anything from what you’ve read. As a working actor you’ve had your experience and when an idea written in one of these books speaks to you – it will. Use these books in the same way you do your best practice. When and how you want.
At other times you may be struggling with a particular acting issue at which point you can turn to a section in your book and read what the author has to say on it.
It’s very useful to apply theory to a detailed point of work that you’re actively taking up. The book may give practical tips and a methodology that you can immediately put to the test.
Most often though, you pass certain moments seeking light, clarity, or good energy, and these wonderful books can provide it.
Pick a page, any page.