有感而发

Life is full of surprises, that's why it is interesting.  You will learn something out of these surprises.  May it be sad or happy.  Sorrow or blessed. 

You have goals in your life,  knowingly or not, and make changes towards these goals while you navigate along your life.  You might not be able to reached your goals at the end of your  life,  but the surprises  filled the emptiness  and when time is limited,  you settled in the ideas that you are on the way to your life goals at the end anyway,  though you might not reached that destination in time.