By: Victoria Donahue, Registered Psychotherapist. EMDR Therapist & IFS Therapist – Trauma and Anxiety Therapist in Toronto
One of the most common reasons people seek therapy is feeling mentally stuck. Overthinking, getting caught in repetitive loops of worry, rumination, or mental replay, is something most people experience at times. But when it becomes chronic, it can drain energy, disrupt sleep, and make it difficult to feel present or at ease.
Overthinking is especially common for individuals living with anxiety, unresolved trauma, depression, or chronic stress. Across many mental health concerns, repetitive negative thinking is a shared experience, often reflecting a nervous system that has learned to stay on high alert.
Overthinking is not a personal failure. It is often a protective response shaped by stress, anxiety, or trauma.
The Different Forms of Overthinking
Worry: Future-Focused Thinking
Worry involves imagining negative future outcomes and is often accompanied by anxiety and uncertainty. From a nervous system perspective, worry reflects the brain’s natural bias toward scanning for threat.
When anxiety is activated, thoughts tend to focus on worst-case scenarios. These thoughts increase anxiety, which in turn reinforces the habit of worrying, keeping the cycle going.
Examples of worry:
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“What if something bad happens while my child is away from me?”
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“What if I don’t do well at work and everything falls apart?”
Rumination: Replaying the Past
Rumination focuses on past events or ongoing situations that feel unresolved. These thought patterns are often self-critical and emotionally heavy, accompanied by shame, sadness, anger, or regret.
Although rumination can feel like problem-solving, it rarely leads to resolution. Instead, it strengthens negative beliefs about oneself and deepens emotional distress.
Examples of rumination:
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“Why did I say that? Everyone must think I’m awkward.”
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“If only I had acted differently, my life would be better now.”
Obsessive Thinking: Intrusive Thoughts and Urgency
Obsessive thinking often involves intrusive thoughts paired with a sense of urgency, an internal alarm that something must be fixed immediately. These thoughts can feel difficult to control and highly distressing.
Many people respond by seeking reassurance or checking behaviours, which may bring temporary relief but ultimately reinforce the cycle.
Examples of obsessive thoughts:
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“What if I forgot to lock the door?”
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“What if I’m sick and don’t know it yet?”
Where Does Overthinking Come From?
Overthinking isn’t inherently harmful. Reflection, anticipation, and emotional processing can be adaptive, especially during difficult life experiences.
Thinking helps us:
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Anticipate and prepare for challenges
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Make sense of emotional experiences
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Understand ourselves and others
However, for individuals with unresolved trauma, early attachment wounds, chronic stress, or anxiety-based nervous system patterns, thinking can become overactivated. Instead of leading to insight or action, it turns into looping and vigilance.
When overthinking interferes with sleep, relationships, work, or overall well-being, it may signal that deeper support is needed.
Overthinking becomes problematic when it no longer serves clarity or coping, but instead keeps the nervous system stuck in threat.
Why Do We Overthink? Common Underlying Reasons
Overthinking often developed for a reason, even if it now feels exhausting or unhelpful.
Some common functions include:
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Creating a sense of control during uncertainty
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Feeling prepared for perceived danger
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Staying emotionally guarded
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Avoiding vulnerable or overwhelming emotions
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Attempting to gain insight or self-understanding
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Becoming a learned habit over time
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Being modeled early in life by caregivers
Understanding the function of overthinking is often an important step toward loosening its grip.
How EMDR Therapy Helps with Overthinking and Anxiety
While coping strategies and mindfulness tools can be helpful, many people find that overthinking persists because the nervous system still perceives threat.
Eye Movement Desensitization and Reprocessing (EMDR) therapy helps address this at its source.
Unprocessed experiences, such as trauma, emotional neglect, chronic stress, or significant loss, can leave lasting imprints, including:
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A sense that the world is unsafe
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Harsh or critical beliefs about oneself
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Feeling as though the past is still happening
EMDR therapy helps the brain reprocess these experiences so they no longer trigger the same emotional and physiological responses. As the nervous system settles, the mind often no longer needs to stay caught in repetitive thought loops.
Many people seeking EMDR therapy in Toronto notice that overthinking decreases not through force or control, but because their system finally feels safer.
How EMDR and IFS Work Together for Overthinking
In integrative therapy, overthinking is often understood not as a flaw, but as a protective part of the system.
From an Internal Family Systems (IFS) perspective, the part of you that overthinks is usually trying to help, by anticipating danger, preventing mistakes, or protecting you from emotional pain. Even when its strategies are exhausting, its intention is often safety.
IFS helps build awareness and compassion for these protective parts, rather than trying to silence or fight them.
EMDR and IFS work well together:
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IFS supports understanding why overthinking developed and helps build internal safety
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EMDR processes the experiences that burden these parts and keep them stuck in fear
Together, this integrative approach allows overthinking to soften naturally, without forcing change or bypassing underlying emotions.
Frequently Asked Questions About Overthinking and EMDR Therapy
What causes chronic overthinking and rumination?
Can EMDR therapy help with overthinking and anxiety?
Is EMDR therapy only for PTSD?
Can IFS therapy help with overthinking?
Do you offer virtual EMDR therapy in Ontario?
EMDR Therapy for Overthinking in Toronto
If you’re based in Toronto and find yourself stuck in cycles of worry or rumination, EMDR therapy may be an effective option. EMDR is a trauma-informed approach that helps the nervous system move out of chronic threat and into greater regulation.
I offer EMDR therapy in downtown Toronto as well as virtual therapy across Ontario, integrating somatic and parts-informed approaches, like IFS, to support both emotional processing and nervous system regulation.
Book a free 15-minute consultation to learn more.
