This reminds me of a great quote by Lao Tsu:
“Watch your thoughts; they become words.
Watch your words; they become actions.
Watch your actions; they become habits.
Watch your habits; they become character.
Watch your character; it becomes your destiny.”
And there is also a great TED Talk about teaching your mind to think positively, to set up small goals, and to request the help of others throughout life – it is proven to help you live longer!