Macbeth was led down to an unescapable road of doom by an outside force, namely fate in the form of the three witches. There was no supernatural force working against Macbeth, which therefore makes him responsible for his own actions and inevitable downfall. Macbeth is indeed responsible for his own actions, which are provoked by an unwillingness to listen to his own conscience, the witches, and his ambition. The witches tempted Macbeth with their prophecies, which made Macbeth¡¦s heart and mind slowly filled with ambition and his huger for power. The witches predicted, at the beginning of the play, that Macbeth would soon become the Thane of Cawdor and eventually the outright King. They tell Macbeth this, simply to ignite what would finally end up in him taking the life of King Duncan.
Ambition, no matter how small, builds up, and becomes a need. When this ambition is built up and encouraged, it can influence a person 's decision. Macbeth went to three witches, who prophesized that he would become King. This got Macbeth thinking of how he can become King. At this time, he was still unsure of whether he would take any action toward gaining the crown. When he comes back to his house, Lady Macbeth convinces him to murder King Duncan, through emotionally degrading him, shown in the quote: "Art thou afeard/ To be the same in thine own act and valour/ As thou art in desire?" (Act I, Scene IV). This quote shows how Lady Macbeth influenced Macbeth 's decision, because after hearing about the prophecy, she also had the ambition