Lady Macbeth and Macbeth go through an ambitious period. When Macbeth hears the witches promising his kingship, he plans to murder the king. King Duncan is his name. So he can become king. He fears of no doubt at this moment. (Act 1 Scene 3 pg 7) here he thinks of accepting being king. (Act 1 Scene 4 pg 2) Macbeth thinks of being king and murdering Duncan. (Act 1 Scene 5 pg 3) Macbeth and Lady Macbeth plot on killing Duncan. (Act 1 Scene 7 pg 2) Macbeth reconsiders in killing Duncan. Macbeth begins to have doubts. (Act 1 Scene 7 pg 3) Lady Macbeth insists in killing Duncan.(Act 1 Scene 7 pg 4) Macbeth is now decided to kill the king, but he feels regret. After the murder of King Duncan he begins to have doubts because he knows that Banquo's descendants will take away the thrown and kingship from him. Therefore, this makes him go mad and insane, making him commit one murder after another so there will be no one in his way to stop him from being king. Macbeth's doubts cause him to go back to the witches to assure himself that no one will take the crown away from him. Doubts also make him act impulsively about certain matters. Lady Macbeth on the other hand over time she begins to feel guilt when she starts sleepwalking. (Act 5 Scene 1 pg 1-4) She say's in her sleep the murders she committed. She is repented. However, there is nothing she can do. Due to her insecurity, doubt, lack of sleep, etc she decides to commit suicide because the guilt was just to painful to handle. Both Macbeth and Lady Macbeth we see their character disintegration throught the whole play because of a wicked action they did. It's very helpful. Hope this helped :)