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.
Another great quote about the same issue. Develop thoughts and words that directly point to the habits you want to acquire.
The thought manifests as the word;
The word manifests as the deed;
The deed develops into habit;
And habit hardens into character;
So watch the thought and its ways with care,
And let it spring from love
Born out of concern for all beings…
As the shadow follows the body,
As we think, so we become.
From the Dhammapada
Sayings of the Buddha
Have a great day!