Investing money in stock is similar to the investment of feelings in our mind. If we dont take care of the loss, we might end up loosing all the money. Same applies to the negative feelings in our mind!!!
Should we take criticism or not? "If yes, then how to take it without harming our confidence?". "If no, then, will it lead to increase our over confidence?". You can find the solution with a story of Gautama Buddha
In this podcast you can understand 2 things : "Why shouldn't we take decisions, when we are in high emotional feeling?" And "How can we reduce the guilt feeling of doing some wrong thing in our life?"