Ambition gives meaning to our simple life.dialy waking up going to school, coming back home eating  sleeping  doesnt feels good or better in life...
but if we have an ambhition or a goal in life we work hard to achieve it. when we fails we will try again and again until achieving it. and we becomes so much dedicated to the work we last when we achieve it we could feel pleasure in life......but if we doesnt had any goals in life there is no pleaasure in be ambitious!