Sometime back, I read a book (can't recall which book i read it from) whereby the author mentioned that there are sufficient survey/test to proof that optimism is BORN (i.e. its in your gene). Personally, I don't buy the idea as I view that optimism can be MADE. Having said that, I do agree that certain people are more receptive in accepting set-back/failure and move on faster than others. However, it doesn't means that there is no way for them to improve on their thinking. Positive thinking is very important in every aspect of life (of course includes investment journey). You need to maintain enough level of positive thinking (optimism) before your tenacity runs out of steam. Also, we need positive thinking to fight against pre-mature surrendering. Just like in stock investment, we are bounds to face with set-back, so be it, just mentally prepared this small hiccups and move on (and of ......