CBT Tools

Posted on Nov 10

I Built 806 Free CBT Tools in Vanilla JavaScript — Here's Why

#javascript #mentalhealth #productivity #webdev

Why CBT? Why JavaScript?

Cognitive Behavioral Therapy (CBT) is the most evidence-backed treatment for anxiety and depression. The core insight: your thoughts are not facts — they are patterns that can be identified and reframed.

As developers, we think in deterministic transformation pipelines:

Input (automatic thought) → Pattern match (cognitive distortion) → Reframe (alternative thought) → Output (behavior change)

This is essentially a debugging pipeline for your brain:

Debug mode: Identify which line of code is wrong (identify cognitive distortions)
Refactor: Rewrite that logic (cognitive reframing)
Test: Verify the new logic holds (behavioral experiment)

I built 806 free CBT tools — all vanilla HTML/CSS/JavaScript, zero dependencies, no backend, no signup.

Why NOT use NLP/ML?

People ask: "Why not use LLMs for cognitive restructuring?"

Answer: precision, latency, cost, privacy.

Scheme	Precision	Latency	Cost	Privacy
Pattern matching	Deterministic (same input → same output)	0ms	$0	Data stays in browser
LLM API	Stochastic (temperature > 0)	500-3000ms	$0.01/call	Data goes to server

CBT output space is finite:

11 cognitive distortions
13 core beliefs
6 technique paths

Using an LLM for this is like using a nuclear power plant to power a flashlight.

Deterministic = explainable. Each match chain IS an intervention.

Code Sample: Distortion Detector

// Core matching logic — deterministic pattern matching
const distortions = {
  'mindReading': {
    patterns: ['他们觉得', '别人会笑话', '所有人都在看'],
    reframe: '读心术：你无法知道别人的想法。证据是什么？'
  },
  'fortuneTelling': {
    patterns: ['肯定会失败', '一定会', '绝对会'],
    reframe: '预言家：你预测了负面未来。这个预测的证据是什么？'
  },
  'labeling': {
    patterns: ['我是个失败者', '我太笨了', '我没用'],
    reframe: '贴标签：用一个词定义自己不准确。具体行为是什么？'
  },
  'catastrophizing': {
    patterns: ['完了', '一切都毁了', '这辈子完了'],
    reframe: '灾难化：你在想最坏情况。最坏情况发生的概率是多少？'
  }
};

function detectDistortions(thought) {
  const found = [];
  for (const [key, config] of Object.entries(distortions)) {
    if (config.patterns.some(p => thought.includes(p))) {
      found.push({ id: key, reframe: config.reframe });
    }
  }
  return found;
}

// Example
const thought = "我肯定会搞砸这次演示，所有人都会觉得我是个骗子";
const result = detectDistortions(thought);
// → [
//   { id: 'fortuneTelling', reframe: '预言家：你预测了负面未来...' },
//   { id: 'mindReading', reframe: '读心术：你无法知道别人的想法...' },
//   { id: 'labeling', reframe: '贴标签：用一个词定义自己...' }
// ]

The Tools (All Free)

Tool	Function	Link
Thought Record	7-step CBT + distortion detector	Use free
Distortion Checker	Paste thought → identify 11 traps	Use free
Mood Tracker	Daily trends + activation suggestions	Use free
Anxiety Toolkit	6 techniques + 5-4-3-2-1 grounding	Use free
Depression Toolkit	6 techniques + activity scheduler	Use free
OCD Toolkit	6 techniques + ERP tracker	Use free
Social Anxiety Toolkit	6 techniques + exposure builder	Use free
Imposter Syndrome	6 techniques + evidence log	Use free
Burnout Detector	6 techniques + burnout log	Use free

All tools: pure frontend, zero dependencies, offline-ready.

Data (Honest)

806 free pages
226 developers cloned the toolkit
$0 revenue (by design)
3,681 Dev.to reactions
3 GitHub stars

Free is a feature, not a bug. People who can't afford $150/therapy session deserve these tools.

For Developers Reading This

If you're experiencing:

Imposter syndrome ("I don't belong in this role")
Burnout ("I hate coding now")
Anxiety ("I'll mess up this deployment")
Perfectionism ("This PR isn't good enough to submit")

Try these tools. They won't replace therapy, but they're the first line of defense when you're alone at 2am facing a panic attack.

Links:

Toolkit: https://473185670.github.io/cbt-toolkit/
GitHub: https://github.com/473185670/cbt-toolkit
Support (optional): https://4043969836017.gumroad.com/l/yyzll ($1-7)

Disclaimer: These tools are for self-help and education. They don't replace professional mental health services. If you're in crisis, please call a hotline or seek medical help.

If these tools helped you, consider starring the repo ⭐ or sharing with someone who might need it.

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