The rowing machine shows every split, even the ugly ones. Seeing your bad numbers honestly is how they improve.

A number you cannot argue with is uncomfortable and useful at the same moment. Most of the time you can tell yourself a story about how a session went, and a readout removes that option entirely. What gets measured honestly tends to improve, mainly because you can no longer avoid knowing where it stands. The flattering version was costing you the information.

Pick one thing you have been assessing by feel and start writing the real number down. Splits, hours slept, money spent, pages read. Change nothing for a week, just record it, because the recording alone is usually enough to start it moving.