The secret to trying something new

Faced with the choice between changing one's mind and proving that there is no need to do so, almost everyone gets busy on the proof. 
John Kenneth Galbraith

Is your reluctance to try something new holding you back from higher investment returns?

Imagine what your life would be like if you never tried anything new. You would still dress the same way you did 10 years ago, eat the same food you did, and maybe even drive the same car as you did back then!

At this point you may be asking what is he driving at?