The real trick is the only thing convincing everyone that life is supposed to be easy, is Hollywood, where every protag more or less wings it and somehow winds up with successful conflict resolution.
Without that being bludgeoned into your subconscious for your whole life, what possible evidence or reason could any person possibly have for thinking life is supposed to be easy?
I can only think of one person that actually put something on tv that tried to be real, that was Mr Rogers. He talked about things like divorce, losing a job, fighting with loved ones, etc. He alone acknowledged that life is hard, and actually prepared kids for it.