After reading "Why we sleep" (Matthew Walker) and "Spark" (John Ratey) I went from drinking a couple of times a week (some beers, sometimes a cocktail) to zero.

Knowing the damage I was doing to myself, all the side effects and bad impact on my health (sleep, hearth, overall physical performance) literally stopped me from continuing with this. Moreover, in the same period the report the article "THE IMPACT OF ALCOHOL CONSUMPTION ON CARDIOVASCULAR HEALTH: MYTHS AND MEASURES"[1] from World Health Federation came out. TL; DR: the right amount of alcohol for anyone is precisely zero.

In short, a better knowledge of what I was doing to my body helped my in stopping a bad habit.

[1]: https://world-heart-federation.org/wp-content/uploads/WHF-Po...