SRS (Spaced Repetition System) for memorization which I use on a daily basis. His system makes high use of Anki, phone and computer application. I wrote an article detailing his strategy to learning any language.
In 2015, Danny got fired from Airbnb. Just two years later, he started two successful businesses and wrote a best-selling book. Since then, he's become a bodybuilding, location-independent, minimalist traveling the world while living in Airbnbs. He describes himself as a skeptic, contrarian, and expert cuddler. In his spare time he reads, cooks, and plays basketball. Follow his journey on Instagram or YouTube.