When I can't sit in the quiet it's because my brain is circling around something uncomfortable. I wouldn't dare to presume to tell you that's what you're doing, or what to do about it. It could be something as simple as "I've got something I want to talk about with my partner", it could be something foundational to who i am as a person and I'm gonna have to acknowledge it and work on it.

Things like this are why meditation is important. Few if any of us are able to sit comfortably in the quiet in a way that will benefit our minds and bodies. It's natural to be looking to the past or the future, and doing so has its place. We learn from the past, and we plan for the future. What meditation will teach you is how to delineate between looking at the past and future and obsessing over the past and future past the point where it serves you. It teaches you how to, in the words of Ram Dass, Be Here Now.