You now have three practices. Here is how they fit into an ordinary day.
In the morning, before you reach for your phone, take one breath and decide to remember yourself today. Then let the day begin.
Through the day, use the doors. Each doorway is a reminder: Where am I? Am I really here? A few times, add the three questions from page 15. Choose one ordinary task and watch yourself doing it.
At night comes the third practice, the evening review. It is one of the oldest exercises there is, and one of the most useful. Lying in bed before sleep, go back over the day in reverse order: from now, to the evening, to the afternoon, to the morning. Do it as a witness, not a judge. You are not grading yourself. You are seeing what happened.
Things will appear that you missed while you were living them: a sharp word, a kindness you ignored, a fear that steered your afternoon. Do not argue with them. Just see them.
The review does three things. It strengthens your self-observation, because you see what you could not see in the moment. It prepares you for the work of Part II, where you meet the selves one by one. And it trains your memory, which you will need at night in Part IV.