Jack of all trades or Master of one trade?!

I am not sure whether I am a Jack of all trades or Master of one trade?

I am doing good in many things, but I am not at all concentrating on one thing to become a master. In order to achieve in life - do I have to be master of one trade or jack of all trades or master of all trades? Is that possible to be master of all trades??

In the company I work for, they call me - Jack of all trades - does that mean that I am good to be successful in life? Should I master one trade and just concentrate on just one art??

If you have any thoughts, please let me know...
I guess, many might have crossed this situation....