This is also called the Seinfeld chain, from the all-time popular Comedy series. Taken from the episode "Calendar about nothing".

Jerry: The trick is, you don't break the chain.
George: Don't break the chain?
Jerry: Don't break the chain!
Kramer: I broke the chain...
Jerry: You broke the chain?!
Kramer: I broke the chain, Jerry, I did.

Via Lifehacker

In an interview Gina Trapani says,

The hack is simple: pick a system and stick with it. (because)...the reality is that, like humans, every task manager, calendar, smartphone, or productivity tool is flawed…

The point: Whatever is working, whatever you have decided upon to make things work, don't ever break the flow.

[From the 100 Ways To Be Being Remarkable Series, a special project that brings you business and self-development advice from The Success Manual. ]