When thoughts keep looping: understanding worry and rumination

CareOps editorial team · October 9, 2026 · 7 min read

General information and service guidance published by CareOps. This is not an individual diagnosis or treatment plan.

Translated from our Korean guide. Korean public services, insurance, and helpline numbers refer to South Korea. For urgent help elsewhere, contact local emergency services or a crisis line in your country.

Why did he say what he said earlier, and what did he mean? I've been thinking about the same thing for hours, but I can't find an answer and I just feel drained. It's not a fault to think too much. However, you need to distinguish whether your thoughts are moving forward or going around in place.

Rumination Meaning: How is it different from worry?

Rumination comes from the meaning of a cow chewing its cud over what it ate. In psychology, it refers to passively thinking over and over again about difficult tasks, their causes, and results. Nolen-Hoeksema, who led the rumination research, concluded that rumination makes depressed mood longer and deeper, interferes with problem solving, and wears out support from those around you.

Worry is a related pattern. Worry usually focuses on what might happen in the future, while rumination usually focuses on what has already happened. Ways of responding overlap because both involve recurring thoughts.

A loop that many thoughtful people fall into.

• Rumination feels like insight. I keep holding on to the feeling that ‘if I think about it a little more, I’ll know why.’ But an hour later, I'm still in the same spot.
• It starts in the wee hours. In a study (Killingsworth & Gilbert, 2010) that asked 2,250 adults about their daily lives on their smartphones, people spent 46.9% of their waking time thinking about things other than what they were currently doing, and when they did, they were less happy.
• The lower your mood, the worse it gets. A depressed mood leads to rumination, and rumination brings the mood down further.
• The more you suppress it, the more it comes back. If you try not to think about it, you will keep looking at it, and it will come back to you more often.

Six ways to stop rumination

1. Change ‘why’ to ‘what and how’

‘Why am I always like this?’ is a question that has no answer. There is an answer to the question, ‘What will my first words be if the same situation comes next time?’ Watkins (2008), who studied recurring thoughts, summarized that when you think about the specific ‘how’ rather than the abstract ‘why’, the same topic is helpful rather than harmful.

2. Address yourself by name

Instead of ‘Why did I do that?’ try calling yourself by your name, like ‘Jihyun, what’s bothering you the most right now?’ In several experiments (Kross et al., 2014), people who spoke to themselves by their own name or 'you' were less distressed and ruminated less afterward than those who spoke with 'I'. Just like when I look at a friend's work, I look at it from a step away.

3. Set aside time to think

I decide to think as much as I want for 30 minutes once a day, at the same time and in the same place. If it comes up at another time, I put it off and say, ‘Let’s do it at 7 p.m.’ It's not a ban, it's a reservation. People who used this method spent less time worrying during the day (Borkovec et al., 1983).

4. Moving attention to the body

It's difficult to stop thinking with your thoughts. In one experiment (Bratman et al., 2015), people who walked in nature for 90 minutes experienced less self-perceived rumination, and activity in brain areas related to rumination also decreased. There was no such change in people who walked downtown. I also like things that involve distinct bodily sensations, such as taking a walk in a nearby park, washing dishes, or taking a shower.

5. Put it down on paper and finish with one action:

I write down the thoughts that are spinning in my head. If you write it down, you can clearly see that the same sentences are being repeated. And at the bottom, write 'So, one thing you can do now' and close it. If there is nothing you can do, the answer is to write 'There is nothing I can do right now.' You can also use the four-line form in Emotion Diary.

6. Notice and return

When you notice rumination beginning, name it—“I am ruminating again”—and return your attention to what you were doing. If the thought returns 20 times, redirect your attention 20 times. The practice is returning your attention, not making thoughts disappear.

When you have a lot of thoughts at night

Daytime activities occupy your attention, but thoughts you put aside can return when the lights go out. Try method 3 above—scheduled thinking time—earlier in the evening. If you toss and turn for more than about 20 minutes, get up and move to another room. See our guide to racing thoughts before sleep.

This article provides general information, not diagnosis or treatment. For urgent help, contact local emergency services or a crisis line in your country. In South Korea, the suicide prevention helpline is 109 (24 hours), and the mental health crisis line is 1577-0199.