It is common to feel abandoned when you are left alone.
For the answer to the question above, The point of view you use to to write a description is mental as well as emotional.
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When Macbeth receives the prediction that he will become thane of Cawdor and then it actually happens, his character changes from a nobleman to a villain (with the help of LM). his ambition is what leads him to killing Duncan and so when he was predicted to be king, he was desperate to be king faster. in your answer, NEVER forget to talk about his strong ambition for power