The first ideas behind the Ninety Days concept emerged in the early 2000s. Long before the app even existed, I had already started tracking my habits and goals using Excel spreadsheets and handwritten notes.
To quit smoking, I approached it as an experiment and a personal challenge. Anyone who has ever tried to stop smoking knows that it usually takes more than one attempt. I relapsed several times as well. However, my progress was always visible to me, and I simply decided to start over from day one as often as necessary until I had finally become smoke-free.
Over time, tracking itself became less important—not because it was no longer useful, but because being a non-smoker had become a natural part of my life. At that moment, I realized that this simple system could consciously shape my habits.
💡 Learning
The key was to reset my streak whenever I slipped and to stay honest with myself. In Ninety Days, the focus is not on maintaining a perfect streak but on making meaningful personal progress.
A few years later, I took on my next challenge and gave up alcohol for several weeks. In many parts of Europe, drinking alcohol regularly is still considered normal, while choosing not to drink is often seen as unusual in social situations. Nevertheless, I committed to the experiment and noticed how my daily life gradually changed for the better. I felt more energetic, became more physically active, and realized that the biggest improvements did not appear after just a few days but only after several weeks.
I continue to experience the same pattern today with both physical and mental habits, such as strength training or endurance sports. Whenever I return to intensive training after a break, I notice after about three months that the exercises feel easier and many movements have once again become second nature.
All of these experiences eventually inspired the creation of Ninety Days. The number 90 does not represent a magical threshold—it represents a mindset. Lasting change takes time. By consciously working on your habits every day, you will often notice positive changes after 30, 60, and ultimately 90 days as new routines become part of your everyday life.
I wish you a rewarding journey and a positive experience with Ninety Days.
Andreas Stein