Gandhi: A "No" uttered from conviction is better than "Yes" said to please people, or to avoid trouble.
Saying "No" to many things is one of the ‣ (‣).
Related:
Contra:
https://lethain.com/productivity-in-the-age-of-hypergrowth/ How to handle urgent projects requests when you’re already underwater with your existing work and maintenance? The most valuable skill there is learning to say no in a way that is appropriate to your company’s culture.
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https://www.morebeyond.co.za/facing-the-scary-but-exciting-boundary-between-competence-and-incompetence/ When confronted with the limits of our knowledge and competence in the face of a VUCA context, making decisions can be tough. It is tempting to hedge our bets and try to cover too many bases. If we spread ourselves too thin, we may end up getting nothing done. Here I find a pruning analogy (borrowed from Henry Cloud) useful: for optimal yield, a fruit tree or rose bush needs pruning. Cutting away dead or diseased branches is easy; as is cutting away so-called water shoots or suckers that draw nutrients and energy away from the rest of the plant. But what about healthy branches that may already be ready to bud? Are we able to cut those away to ensure a higher yield overall?
https://medium.com/incerto/the-logic-of-risk-taking-107bf41029d3, Warren Buffet: The difference between successful people and really successful people is that really successful people say no to almost everything.