which direction is macbeth leaning in plans to become king by the end of this scene 4and5

Which Act are you referring to?

act 1

Macbeth is really not cut out for the murdering business. Sure he can kill a thousand men in war but he becomes weak kneed at the thought of killing his own king. Still, those pesky witch fortunes keep nagging at him. When Duncan decrees Malcolm next in line to the throne, Macbeth thinks, The prince of Cumberland! That is a step On which I must fall down, or else o'erleap. Now he is thinking of killing Malcolm as well. In scene 5 Macbeth has changed his mind but L. Macbeth merely questions his manhood to get a reluctant agreement from Macbeth.