Macbeth was a good man but he made the wrong choices. In Macbeth, what are those wrong choices?

He listens to the witches who tell his future completely
without thinking of the consequences, chosing murder and mayhem to achieve his future
goals rather then letting fate run its course.

He listens
to his wife and lets her lust for power overthrow his
judgment.

He choses to kill his friend Banquo instead of
listening to his valuable advice.

Mainly, one could read
Macbeth as a character whose ambition overwhelms his sense of good judgement and
morality.