Hell Yeah or No

From Derek Sivers, “No ‘yes.’ Either ‘HELL YEAH!’ or ‘no.’”, posted on sive.rs on August 26, 2009. Sivers later made the rule the title of his 2020 book Hell Yeah or No: what’s worth doing. The post names the feeling that qualifies (“Wow! That would be amazing! Absolutely! Hell yeah!”) and pairs the filter with a diagnosis: “We’re all busy. We’ve all taken on too much.”

The slogan tells you when to say no. The post title goes further: it removes the neutral yes from the response set entirely, leaving only the binary. Sivers does not sort weak yeses and strong yeses and then admit the weak yeses onto the calendar; the middle tier defaults to no. Most opportunities do not produce the reaction he names, so the calendar empties as a consequence.

The filter doesn’t distinguish between commitments by cost. Applied to every opportunity, it strips out cheap experiments alongside expensive bets. Bezos’s distinction between one-way and two-way doors gives the missing axis. HELL YEAH is the right gate for one-way doors: cofounders, multi-year roles, the lease, anything where entry and reversal are both costly. For two-way doors (a coffee, an essay draft, a strange conversation), the cost of a miss is an hour, and yes is the default. Sivers’s 2018 followup names the caveat directly: “Though it’s good to say yes when you’re starting out, wanting any opportunity, or needing variety, it’s bad to say yes when you’re overwhelmed, over-committed, or need to focus.”