interleaving—that approach where you alternate different types of problems—for example, alternating module 3 problems with module 7 problems.

Above all, remember that it’s not the note-taking—it’s what you get into your brain that matters. Even the best notes are worthless if they’re not used as the study tools they were meant to be.

Vivid images can sometimes be strengthened by adding sounds or feelings. You could, for example imagine the moon swirling around with a swooshing sound.

To think of a metaphor, simply ask yourself, “What does this remind me of or resemble?”

also best to avoid checking your cell phone or email during this break time—more on why later. Repeat as appropriate. If you want to study for 2 hours, you can do four Pomodoros with the break lasting roughly 5 minutes each time. If you have trouble getting yourself back to work when the break is done, set a timer for the break as well.

How much time will you spend solving past exam problems, reading, reviewing notes, and discussing with peers? Sum your thoughts up in a quick study plan. If you want, you can go into more detail for a specific subject.

If you have some time at the end of the test, use it to review your answers.

Keep in mind the Hard Start approach: start with what seems to be the hardest problem—but only work on it for a few minutes, until you get stuck. When you move to an easier problem, your diffuse mode can work in the background on the harder problem.

Watching a movie, going for a walk, and having a meal can all become more fulfilling if we share it with someone we like. That’s because people have a built-in need to be socially connected and to secure the love and respect of others.7 And face it—studying is more enjoyable if you have someone to study together with. If some of your friends are se