In our modern society hardly any jobs will be for life anymore. It is very likely that you will have to change companies or even careers sooner or later. You might also have to work longer until retirement and update your skills continually to stay attractive to prospective employers. So make life-long learning a habit now.
For the multipotentialites amongst you this is the easy part as you very probably love learning and trying new things. You also thrive on change because it gives you the variety you crave.