Just saw this clip. Pay attention to how Doctor Mike explains his thinking process:
Start with symptoms: Whats the current problem in the business? (Is it no sales? High CAC? etc.) Move from vague to specific.
A priority list of possibilities, from least likely to most likely (based on knowledge and understanding of the audience and persuasion psychology): is the audience not emotionally engaged? Is the awareness point wrong? Is the sophistication too high? Are there rampant clichés? Etc.
A plan for investigation! Based on the above, what is the most efficient way to arrive at a diagnoses? Do we need to dial back ad spend and create a leaner testing structure? Is there a need to reevaluate the positioning of the content? Are outside factors affecting the perspective of the product/offer/problem? Is the offer ACTUALLY the best possible solution? Etc.