Dear @chbartist sir!
All are alive for themselves, but those who live for others, they are human beings in true sense. In fact, we not only fight to realize our dreams, but the dreams of others are associated with our dreams. Because we are connected to a community and due to being connected to the community or family, the dreams of family or community are also associated with us. We are happy by fulfilling our dream but the family associated with us is in misery, then what is our pleasure to do? That is why we fight to fulfill the dreams of other people with our dreams. If there is no one to share happiness in our victory, then what pleasure has worked? In fact if people of our family or community are not happy about it then our fulfilled dreams do not matter.