Do I need to take a sabbatical in order to take stock of my life?
To be introspective is to look within oneself. And what would you expect to find?
What tools would you use to search within yourself? And should you find something, what would you do with it? You don't need to take 'time out' to probe inside your mind. You are what you are and you can change at any time, should you wish to. You do not need introspection to change.