Concept

Opportunity Set B

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Opportunity Set B

A framework for career and personal development introduced by Jason Feifer in his book Build for Tomorrow and elaborated in his Lenny’s Podcast episode.

At any moment, two categories of opportunity co-exist:

  • Opportunity Set A — what is explicitly asked or expected of you: job responsibilities, deliverables, performance targets, the baseline of your role.
  • Opportunity Set B — what is available to you, even though nobody is asking you to pursue it: new responsibilities you could take on, skills you could develop, side projects, speaking, writing, building in public.

The core claim is that Set B is where compounding growth happens. If you focus exclusively on Set A, you remain qualified only for what you are already doing. Set B is the territory where your identity, capabilities, and network expand beyond your current definition.

How it works

Set B opportunities are not invented from scratch — they are available, meaning they exist in the environment around your current position. The work is: (1) noticing they exist; (2) acting on them without external instruction or permission.

Feifer’s own trajectory: when he became Editor-in-Chief of Entrepreneur, nobody asked him to develop a speaking career, host a podcast, or write a book. Those were all Set B — unclaimed, unprompted. Pursuing them shifted his self-conception from “magazine editor” to “entrepreneur who helps entrepreneurs.”

The compounding mechanism

Set A mastery gets you to your next role; Set B mastery gets you to a different kind of role — one that did not exist before you created it. The pattern recurs: each Set B action expands what is available in the next period’s Set B.

Relation to “What’s the point of building something if you can’t maintain it?”

Feifer pairs Opportunity Set B with the sustainability question from psychotherapist Katherine Morgan Schafler: “What’s the point of building something if you can’t maintain it?” The practical implication: Set B expansion is worth pursuing only at a pace you can sustain. Set B is not a maximisation rule — it is a direction, not a rate.

Where mainstream views differ

The framework is aspirational and individual-agency-focused. Critics of similar frameworks (e.g. “hustle culture”) argue that Set B opportunity is not equally available — structural constraints of role, industry, or life stage mean some people’s Set B is much smaller than others’. Feifer’s version does not address this directly; it assumes the listener already has meaningful Set B available to them.

See also