There is but one reality; that is true—but the two of you experience it in slightly different ways.
-The Cinder Spires by Jim Butcher
Based on your experiences, goals, and personality you will experience the world in a different way than all other people you meet. The difference might be really small or very big. But we all focus on, see, and remember different things. This will cause a lot of conflicts and frustrations. But it will also create amazing solutions, make us learn new things and see problems in a different way.
We often need the similarities to start collaborating and getting to know one another. Then we need the differences to creates something unique.