1. Warren Buffett who is 78 years is also not immune from makiing the mistakes as his firm Berkshire Hathaway, has posted one of the biggest lossess in the past twenty years and he has acknowledged that he has made mistake by writing Derivatives and a major loss has occured due to his wrong decision to invest in an oil producer i.e. ConocoPhillips. Thus if you as a retail invetsor has made a misteake than one need not worry as even Warren Buffett isn't perfect.

2. The best advice which one can get from him and can learn from his mistakes is that If every shot one hit in golf course was leading to a a hole-in-one, it will not take time when one will lose interest and thus as per the individual advice one has to hit a few in the woods.