What your mind does at night, and how to use it.

All guides

• Why you remember embarrassing moments at night

  Why the cringe comes back at 1 am, how little others noticed, and how to turn the replay into a rehearsal.

• Why you replay conversations at night, and what to do instead

  What you said, what they thought, why it gets louder in bed, and how to turn the replay into a rehearsal.

• Mom guilt at night: when you replay snapping at your kids

  Why the guilt gets loud once the house is quiet, what to say in the morning, and how to rehearse a calmer tomorrow.

• The night before a presentation: how to rehearse instead of worry

  An evening plan, a 90-second script for bed, and how to stop freezing when it is your turn to speak.

• Overthinking at night: give your mind something better to think about

  Why your mind speeds up in bed, six techniques side by side, and one better thing to think about.

• Mental rehearsal before sleep: how to practice who you want to be

  The last thing you picture before sleep is what you practice. Here is how to make it the person you want to be.

• The Stoic evening review, with a fourth question for tomorrow

  Seneca's three questions before sleep, how to keep them kind, and the one that points at tomorrow.

• Do sleep affirmations work? What the research actually says

  Words played in deep sleep do little. What you believe and picture as you drift off is another story.

• Can you reprogram your mind while you sleep? Myth vs evidence

  What sleep can and cannot do for the person you want to become, and how to use the minutes before it.

• Affirmation apps compared: I am, ThinkUp, Innertune and a session written for you

  What each app plays, how personal it gets, whose voice you hear, and what it costs, from each app's own pages.

• Personalized sleep stories for adults: what personalized really means

  The four levels of personalized, which apps sit where, and what to ask before you pay.