How to Spot and Test Your Emotional Patterns

A pattern is a sequence, not a mood

“I'm always irritable on Mondays” is a description of a mood. A pattern is more useful because it has parts you can change: “When I've answered work email after 10 p.m. on Sunday, I sleep badly, and on Monday morning I snap at the kids during the school run, then feel guilty all day.” That sentence contains a condition, a situation, a reaction and a consequence. Each one is a place to intervene.

If you have not yet found your common cues, start with identifying your emotional triggers. This guide is about the bigger picture those cues sit inside.

The conditions that move your baseline

Many patterns depend less on what happens and more on the state you are in when it happens. Sleep is the best-studied example. A meta-analysis by Cara Tomaso, Anna Johnson and Timothy Nelson pooled 64 studies and found that sleep loss raised negative mood moderately (g = 0.45) and lowered positive mood substantially (g = -0.94). (Tomaso, Johnson, and Nelson, 2021) Note that last number: losing sleep may cost you more good mood than it adds bad mood, which can feel like flatness rather than irritability.

Other conditions are less well measured but worth logging because they vary so much between people: hunger, time of day, caffeine and alcohol, the number of meetings, time alone, who you have just been with, the week before a deadline. You do not need research to tell you whether these matter for you. Your log will.

Why your memory is the wrong instrument

Most people already have a theory of their patterns. The trouble is that the theory was built from memory. Michael Robinson and Gerald Clore's review of emotional self-report found that when people describe feelings they are not currently having (last week, or “usually”), their reports lean more on general beliefs about emotion than on the experiences themselves. (Robinson and Clore, 2002) If you believe you are “bad with Mondays,” you will remember the bad Mondays.

A log written the same day corrects this. It also captures the ordinary days, which matter as much as the hard ones: a pattern is only a pattern if it is more common on some days than others.

The four-week log

Keep it short enough that you will do it every day. Two minutes, at the same time each evening, with the same six fields:

• Sleep last night, in hours (a rough guess is fine).
• Strongest feeling today, with a 0 to 10 rating.
• Where you were and who you were with when it peaked.
• What you did in response.
• How it ended: resolved, faded, still there, or carried into the evening.
• One condition you suspect mattered (hungry, rushed, after a hard call).

Log calm days too. “Content, 3, at home, nothing much happened, slept 8 hours” is a useful entry. Without it, your log becomes a record of only your hardest moments, which is a distorted picture of you.

Reading four weeks of entries

At the end of four weeks, set aside thirty minutes. Look for sequences rather than single causes. Sort entries by sleep: are the 7-to-10 ratings mostly after short nights? Sort by day of the week, by place, by person. Look for what comes after the reaction, too: a lot of patterns are less about the first feeling than about the hour of guilt, replaying or avoidance that follows it.

Then show one or two observations to someone who sees you often. Simine Vazire and Erika Carlson's review concludes that people's views of themselves are largely accurate but have blind spots, and that close others can see some traits better than the self, especially very desirable or undesirable ones. (Vazire and Carlson, 2011) A partner or close friend may notice the part you missed: “You're fine on Mondays. It's Sunday night you get quiet.”

Test one change like a small experiment

Once you have a candidate pattern, treat it as a hypothesis, not a conclusion. Write it as a sentence (“When X, I tend to Y”). Pick one change to one part of the sequence. Keep everything else the same for two to three weeks while you keep logging. Then compare the numbers before and after. If nothing moves, the pattern may be wrong, or the change may be in the wrong place. Both are useful to know.

Change one thing at a time. If you start sleeping more, cut caffeine and skip a weekly meeting in the same week, you will feel better and learn nothing about why.

When the log stops helping

Pattern-tracking can tip into rumination: rereading old entries, building theories about your childhood, feeling worse after every review. Susan Nolen-Hoeksema, Blair Wisco and Sonja Lyubomirsky's review concludes that repetitively dwelling on distress worsens low mood, sharpens negative thinking and impairs problem solving. (Nolen-Hoeksema, Wisco, and Lyubomirsky, 2008) Set limits: one review a week, thirty minutes, ending with one change to test. If a review leaves you feeling worse rather than clearer, stop for a week.

A log is not a mental health assessment. If you notice low mood on most days for weeks, losing interest in things you usually enjoy, or thoughts of harming yourself, talk to a doctor or licensed mental health professional. In the US you can call or text 988 at any time to reach the Suicide and Crisis Lifeline. (988 Suicide & Crisis Lifeline)

Key takeaways

• Describe patterns as sequences with parts you can change: condition, situation, reaction, aftermath.
• Short sleep is a well-documented condition that lowers positive mood and raises negative mood.
• Keep a same-day log for about four weeks, including calm days.
• Test one change at a time, and cap reviews so the log does not become rumination.