Nothing in the league of <i>biggest life lesson</i>, but somethings which I am happy about (or trying work-in-progress):<p>-- Cut down all sugar. I started to take my tea&#x2F;coffee without sugar. And no sweets. Try to take a fruit when have the urge. Which resulted in a drop of 2.5 kgs of weight (better BMI)<p>-- Realizing that yelling at family members (e.g. kids) make you unhappy later on for a long time, with guilt&#x2F;etc. Better at it, but its obviously a perennial work-in-progress<p>-- Off Facebook, for some months. Always had the power to quit and had quit intermittently couple times before. But the last stretch I was fooling myself that I need to be on it, to share interesting stuff with some friends I like. (Now when I really have an urge to share, just bcc select friends in email. But this mode and thought process may change again.)