It’s not sufficient to have read it once, to know it already, to have heard about it. Actively decide to do it again: Always choose to be exposed to thoughts that are constructive, always choose to deal with ideas that are constructive, and always choose to be confronted by challenges that are constructive. Thoughts, ideas, and challenges are forces that form your mind. Beware the forces that form your mind for your mind always remains formable.
Back to business: When it comes to your body, go to the gym (physical exercises). When it comes to your mind, talk to people, read texts, or watch videos (mental exercises). Then go for a walk, for your body and mind.