There is a saying: Never change a running system.
But what if just running is not enough. If we want new results, progress, growth, or experiences, then we need to roll up our sleeves and take our time for the changes we want to see. Even if we have to change a well-running system (can be a style, reputation, product, etc.) and temporarily fall back a bit. Nobody can go forward if he does not risk stumbling on the next step.