Do something today your old habits cannot explain.

Habits produce a predictable output, and everything you do that fits the pattern confirms it. A single action your habits cannot account for is a small crack in the pattern, and the value of it is not the action itself but the evidence that the pattern is not the whole of you.

Do one thing today that would surprise the version of you from last month. Small is fine. The point is to prove that the pattern is a description rather than a rule.