The only requirement you need to read, finish, and act on what this book has to offer is that you’re open to it. You’re open to new ideas, new perspectives, directions, and methods. Maybe you’re open to a new mindset, a new way of thinking, new habits, new challenges, and new failures.
Just because it's practice, doesn't mean it's "allowed" to be terrible. At least not intentionally.
The secret to happiness is freedom … and the secret to freedom is courage. — Thucydides?
He who is not everyday conquering some fear has not learned the secret of life. — Ralph Waldo Emerson