The premises are likely to be true.
The premises reinforce, or support, the conclusion.
The conclusion follows logically from the premises.
Philosophers, theologists, psychologists and economists have long sought to define happiness and since the 1990’s a whole branch of psychology has been dedicated to pinning it down and propagating it, more than simply positive mood. Happiness is a state of well-being that encompasses living a good life. For example, life with a sense of meaning and deep satisfaction.
Lady Macbeth influenced Macbeth's decision to murder Duncan by being manipulative and questioning Macbeth's status as a man. She claimed that she would have "plucked the boneless gums out of her nipple" if she had promised it to Macbeth. This prompts Macbeth to follow through with his promise when he said he would murder Duncan earlier.
She asks him if he would rather be a coward than seize an opportunity to achieve the "ornament" of life - the crown. Additionally, Lady Macbeth says that she cannot love a man who is not willing to have the integrity to do such a thing, this really persuades him as they do share a passionate bond throughout the play.
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He tells them what can he do to figure out his solution to the problem.