What is this?
TruthDeck is a research-backed tool that cuts through self-improvement noise. It started with a question: what does the science actually say about how humans function well?
The answer required reading 49 research domains, extracting 295 evidence-based interventions, ranking them by impact and cost, and building a sequencing model that tells you what to do first, second, and third based on your specific profile.
The deck shows you 7 claims you've probably heard before and tells you whether they survived testing. The quiz identifies your archetype and gives you a personalized Starting Stack of 5 interventions, sequenced so each one makes the next one easier.
Every claim on this site maps to a specific study with a DOI. Every intervention has an effect size. Nothing here is opinion.
Physical Foundation (exercise, sleep, nutrition) · Cognitive Architecture (habits, biases, environment design) · Emotional Regulation (stoic control, self-compassion, affect labeling) · Motivation & Autonomy (self-determination, implementation intentions) · Purpose & Meaning (flow, calling, eudaimonia) · Character & Growth (deliberate practice, identity-based change) · Social & Relational (loneliness, attachment, Gottman) · Temporal & Mortality (death awareness, regret, savoring) · Transcendence & Spirituality (meditation, forgiveness, awe) · Technology & Attention (digital reduction, phone presence) · Burnout Prevention & Recovery