When you're a kid starting school, your parents tell you all about how you'll make friends. Growing up, you're taught how to be nice, how to share things and more in order to make friends. However, nobody really teaches you what to do when those friendships fizzle out. You have to try to work it out on your own through trial and error.
In elementary school, this starts off slowly. Maybe you and your friend got put in different classes one year and stopped playing together at recess. Maybe you guys fought over a toy and decided to go your separate ways. Maybe you each made new friends in different groups and started to drift apart. In these type of situations, you never get closure, but at such a young age, it doesn't seem to phase anyone.
It hits you harder when you reach high school, and it doesn't get any easier from there. By that time, you think you have a better judgment of character. You think you know people, and the things you share with them are much heavier than the building blocks from kindergarten. As you near and reach adulthood, someone you think you can trust walking out of your life can feel wrong like that's not how things are supposed to play out.
That feeling is what makes it so difficult to let go and move on.
More often than not, life is going to leave you wanting some answers. Suddenly, that closure you never craved as a child is the only thing you know how to ask for as an adult. That closure you're looking for is something you can only find within yourself. Life is messy for a reason. You're meant to take lessons away from your hardships in order to grow and prosper. The same thing goes for people who come in and out of your life.
Next time you find yourself looking for that closure, remember that you can find it within the memories you hold and the lessons you learned.