I learned several things the hard way this year:<p>- stay away from people who have shown bad character traits in the past (e.g. cheating, violence, drug abuse...) even if they downplay&#x2F;justify it and behave reasonably towards you for a long time<p>- Severe health issues can creep up on you even if you have no symptoms and live a reasonably healthy life (no smoking&#x2F;drinking&#x2F;weight&#x2F;obvious environmental issues). I apparently lost either the genetic or Chernobyl lottery and had a rare tumor removed that nearly left me quadriplegic. My typing speed is now approx. 1&#x2F;5th of what it was before and my hands ache all day, but fortunately I can still walk and do most things like before.