Books

Personality Isn't Permanent Personality Isn't Permanent
2020
Willpower Doesn't Work Willpower Doesn't Work
2018
Quién, no Cómo Quién, no Cómo
2021
Cambia tu entorno, cambia tu vida Cambia tu entorno, cambia tu vida
2019
Transforma tu personalidad Transforma tu personalidad
2021
Das GAP-and-GAIN-Konzept Das GAP-and-GAIN-Konzept
2022

Audiobooks

Personality Isn't Permanent: Break Free from Self-Limiting Beliefs and Rewrite Your Story (Unabridged) Personality Isn't Permanent: Break Free from Self-Limiting Beliefs and Rewrite Your Story (Unabridged)
2020
Willpower Doesn't Work Willpower Doesn't Work
2018
Das GAP-and-GAIN-Konzept Das GAP-and-GAIN-Konzept
2023