What are two examples of sacrifice in the play Macbeth?

Macbeth's sacrifices in the play are not numerous.  In all
actuality, Macbeth's sacrifices are forced by his actions.  First, after Macbeth murders
Duncan, Macbeth finds that he can no longer sleep.  Therefore, Macbeth has sacrificed
sleep to insure his claiming of the crown. Second, Macbeth sacrifices his sanity.  As he
becomes more and more murderous, Macbeth loses his sanity.  Therefore, to gain the
crown, and keep the crown, Macbeth sacrifices his
sanity.

While sacrifice is typically looked at as something
done for the better, here, Macbeth's sacrifices have very negative outcomes.  Yes,
Macbeth looks at gaining the crown as positive.  The problem lies with the sacrifices he
must make to gain and keep the crown.