A lot of people at some point in life change their career. It could be due to change of their mind that they may develop interest in another field, e.g., a chemist starts exploring physics; or a scientist prefers to jobs related to public dealing rather doing research; or a medical doctor devotes his life to serve people by delivering religion-based knowledge to them and never turn back to its medical profession, etc. I want you all to comment, if you have ever passed through such transition or have observed someone to do so. What is your observation or experience in this regard? What do you think why people do that? What are the possible outcomes in doing so? Is it always successful?