I think that if I had to pick a central theme to most of life, it would have to be disillusion. Reality whittles away at everything that you once imagined to be truthful when you were young, leaving behind a few splinters from anomalies. Sorry if that fails to inspire.
My observation is that most people are absolutely faking it. You can’t tell me that life in general is this constantly wonderful, gratifying adventure that everyone outwardly makes it out to be. Those that are chronically happy are either medicated or are fooling themselves on some level. Maybe those that inherit or make great sums of money are also shielded from dissolution to some extent.
There is no Santa Claus or Easter bunny, your favorite team is generally not going to win it all at the end of the year, your job is likely going to leave you unfulfilled, your marriage is going to warp into something unrecognizable once you have children, your family and friends are going to let you down and disappoint you many times, and most of your big plans will crash and burn. You will be sitting in church one day, and realize that everything about religion is made up by other men, and all of these rules you thought you could follow and achieve some sort of peace of mind and a pathway to the afterlife are not divine.
I think that the redeeming path is to not become disillusioned with oneself. What were your self-perceptions growing up and what are they now? Have elements of yourself remained above disillusionment ? These are what we should be clinging to.