Have this kind of mentality

White Belt mentality

If you have this kind of mentality you'll be indisputable.

In martial arts white belt is given to newbies 

Because they have come to learn.

Think everyday as a new one and learn from people ,learn from books ,learn from mistakes etc...

There are many things to learn in this world.

→Once you've finished your graduation means don't think that you don't have to study or learn any more.

You can always learn life lesson.