The problems you have with other people will largely depend on how you think about other people. If you think about people as obstacles, you will have obstacle problems. Solving an obstacle problem gives you a way-different result than solving a people problem.

It is an unconscious skip from people-as-people to people-as-obstacles. You end up there so quickly, you are unaware of the skip.

Becoming genuinely interested in other people requires conscious thought, effort. It is a subtle shift that does not happen by itself.