I don't remember my first lesson in trading because it's such a long time ago. When I first started trading stocks as a teenager I had a different relationship with money, I knew that even if I lost money on Christmas and my birthday I would just get new money. That's was not a good situation and only after I started earning my own money during university I realised how difficult it is to save money. You are absolutely right that it's the losses that stick with us longer and at least made me think harder about what went wrong. With a win it's usually a lot of joy and I don't spend so much time thinking of my predictions were correct. My biggest trading lessons definitely came after a loss.