About Rational Growth
Rational Growth is a blog about evidence-based strategies for personal development, focus, education, health, and investing. Every claim is backed by peer-reviewed research, and every recommendation comes from real experience.
Who Writes This?
I am a 5th-year science teacher with a degree in Earth Science Education from Seoul National University. I also live with ADHD — which means half of what I write about focus and productivity comes from hard-won personal experience, not just textbooks.
Outside the classroom, I spend most of my time reading research papers, testing productivity systems on myself, and writing. This blog covers topics I spend years exploring: how people learn, how to make better decisions, how the brain works, and how to build systems that actually stick.
Why This Blog Exists
Most self-improvement content is recycled advice with no sources. Most health content is marketing disguised as science. I got tired of reading articles that cite nothing and contradict each other.
So I started writing the kind of articles I wanted to read: research-backed, honestly caveated, and tested in real life.
Our Content Process
- Research: Primary sources first — peer-reviewed journals, meta-analyses, established textbooks.
- Citation: Every major claim includes an inline citation with author, journal, and year.
- Experience: I write about ADHD because I live with it. I write about teaching because I do it every day. I write about astronomy because I studied it.
- Honesty: When evidence is weak, we say so. When a popular claim does not hold up, we say that too.
Areas I Write About
- ADHD & Focus: Living with ADHD, evidence-based strategies, latest neuroscience
- Education: Classroom experiments, cognitive science applied to teaching, PDCA cycles
- Rational Thinking: Mental models, cognitive biases, decision-making frameworks
- Space & Astronomy: Latest discoveries, earth science, and the cosmos — my actual field of study
- Investment Analysis: Backtested strategies with real data
- Health & Science: Protocols evaluated against actual research
- Technology & Tools: AI tools, EdTech, productivity systems I actually use
Editorial Independence
No sponsors. No affiliate links. No conflicts of interest.