Aside from the fact that there is a God, this is an easy one.
No one gives a shit about you, really. Not long after you die, people don’t even think of you, other than in a story. Two generations after you die, virtually no one remembers you or anything you did.
Think of all the people who have come and gone in your life. You don’t think about 90% of them. Who remembers every kid in elementary school? How about the kids on the street you grew up on. When did you speak with them last? Did they initiate the conversation?
Most people overestimate their importance, especially to others. Your spouse will likely even get remarried if you die.
This works for me on a lot of levels, though. I have eliminated a lot of people from my life who weren’t making it any better. That’s a thing that is best for introverts, though.
This fact has been my best friend in a lot of instances. I even got rid of Facebook because too many people wanted back in my life that I thought I’d gotten rid of.
Delusions of Adequacy 