I have a constant money flow.

Very little income is actually constant. Most of it arrives in lumps and leaves in a steady drip, and the skill is in the reservoir between the two.

People who feel steady about money are often not earning more than people who feel frantic.

They have built one month of buffer, so a late payment becomes an irritation instead of an emergency, and they can afford to turn down the wrong work.

That buffer starts absurdly small. Eleven pounds a week, moved automatically on a Friday, into an account with a deliberately inconvenient login.