(Excerpt from Principles by Ray Dalio)
Don’t collect people. Firing people is not a big deal—certainly nowhere near as big a deal as keeping badly performing people, because keeping a person in a job they are not suited for is terrible both for the person (because it prevents personal evolution) and our community (because we all bear the consequences and it erodes meritocracy). Consider the enormous costs of not firing someone unsuited for a job: the costs of bad performance over a long time; the negative effect on the environment; the time and effort wasted trying to train the person; and the greater pain of separation involved with someone who’s been here awhile (say, five years or more) compared with someone let go after just a year.