In Stephen King's book "Insomnia," the quote reflects on the inevitability of life's cyclical nature. It suggests that no matter how much we try to escape our past or the issues we've faced, they often resurface, reminding us of their presence. This could manifest in various ways, such as old memories, unresolved emotions, or recurring challenges that we believed we had moved past.

The quote implies that both positive and negative experiences can reappear, serving as a reminder of the lessons learned or the struggles endured. It highlights the importance of confronting these past elements, acknowledging their impact on our present, and understanding that they shape who we are. Ultimately, life is a continuous journey of facing both the good and the bad that come back around.