Creating Ourselves

I don't know where I got this, but after many years it still rings true. It tells us how to recreate ourselves, either for the better or the worse:

Be careful of your thoughts
because your thought become your words.
Be careful of your words
because your words become your actions.
Be careful of you action
because your actions become your habits.
Be careful of your habits
because your habits become your character.
Be careful of you your character
because your character becomes your destiny.