Why positive thinking?

This is the question that I have been searching for a long time. And finally, I got this answer.

Positive Thinking

Keep your thoughts under control because they will become your speech,

Keep your speech under control because the same will become your karma,

Keep your karma under control because it will become a habit,

Keep your habit under control because it will become your character,

Keep your character under control because that will be your fate…

I think, This is the best answer to this question. That is why I write and share with all of you.

Let me know what your thinking is about this.

Thank you for your valuable time.