Should we choose one or both? I think that both concepts are essential in life...

I can't agree less, both are extremely important in our lives. What matter most is finding a place of balance while striving to make more money and as such preserve our peace.

As much as money seems to answereth all things yet it cannot restore a lost peace. And one other way to ensure we maintain our peace is taking comfort in who we are and hoping for the best ahead.