We must develop the habit of managing thoughts, get rid of those that lead to destruction (self-destruction) and develop those that are aimed at creativity, growth, and achievement.

You need to be very careful with your thoughts. "Learn to keep the door closed, do not let into your mind, your office and your world anything that tries to get there without an obviously useful purpose for you" (J.M. Adams).

We develop the habit of thinking positively and being in harmony 🙌
In conclusion - a life example of two famous writers: Ralph Waldo Emerson and Thomas Carlyle: the first loved good and his life was a symphony of peace and harmony, the second hated evil - and his life was an epic of disorder and disharmony.

Thoughts either give energy and strength, or drain them, not infrequently provoking various diseases. "A bright thought carries within itself the power that paints it in the picture of life. The deeper the source of the thought, the more forcefully it will spring into life" (Emerson).