Five-minute reset for the days ahead: open your books for five minutes. Not to analyze anything: just to look. Check your bank balance, glance at what's outstanding, notice anything that looks off. That's the whole habit. Five minutes, no analysis required. Founders who do this weekly catch problems in days instead of months, simply because they're looking regularly instead of only when something feels wrong. Set a timer, do it now if you haven't, and comment "done" when you have.