charactersictics of macbeth

Here's a good (though obvious) one to get you started on this question:

We can also read Macbeth's character as a study of ambition and its ill effects. Once Macbeth murders Duncan, he becomes willing to do anything necessary in order to secure his position of power. It also becomes easier and easier for Macbeth to commit heinous crimes. Without thinking twice, he orders the murders of Macduff's family, including his children. According to Macbeth, he's got to look out for his own best interests.

For mine own good

All causes shall give way. I am in blood

Stepp'd in so far that, should I wade no more,

Returning were as tedious as go o'er. (3.4.24)