01
The idea
The audience is rarely "people". It is usually one or two specific individuals — a parent, a former manager, a rival, a version of a peer group from fifteen years ago — installed at some point and never reviewed since.
Marcus makes the deflationary move directly: consider who these people actually are, and what you think of their judgement in every other respect. The question is not whether it is wrong to want approval. It is whether you would take advice from the people whose approval you are working for.
Identifying the specific audience is more useful than any general instruction to care less what people think. General instructions do not work because the pull is not general. It is a particular face, and it can be named.
02
Why this matters
An unidentified audience shapes decisions permanently and invisibly. Identified, it becomes something you can evaluate — and the evaluation is often immediately deflating in a useful way.
The installed audience is also frequently obsolete. People spend decades proving something to a person who has forgotten, changed their view, or died, and the arrangement continues because it was never made explicit enough to review.
And naming it reveals what you actually want. Under the desire for approval there is usually something more specific and more legitimate — to be regarded as competent, to be taken seriously, to have mattered to someone — and that thing can often be pursued directly.