Backpressure. (Includes modeling something as producer/consumer in order to reason about it) It boils down to learning how to say no, but in practice it smooth

Backpressure. (Includes modeling something as producer/consumer in order to reason about it) It boils down to learning how to say no, but in practice it smoothes out demand spikes and makes life much more predictable. It can be applied to personal fines (only consume "wants" as fast as you can produce "surplus"), consulting (only consume "new clients" as fast as you produce "working fine") to maintain a decent work life balance, as well as many other areas.