How is shakespeare presenting states of mind in act 2 scene 2 macbeth

Shakespeare's Presentation of Macbeth Through the Use of Soliloquy in Act 1 scene 7 and Act 2 Scene 1 of Macbeth ... A soliloquy is when, in a play for example, the speaker speaks to himself and the audience while those in the background either freeze or continue on as if the speaker isn't speaking at all.