When reminded of something from the past, specifically a time of failure or darkness, there are essentially two perspectives we can take.
We can allow the memory to drag us down. When we’re reminded of a moment that we’re not so proud of, we can begin to believe that perhaps we’re still that same person who made those mistakes so long ago. Once a failure, always a failure. The devil says “remember” to make us think we never really changed.
We can see it as a testimony to just how far we have come since then. It can remind us of the truth that redemption and change are indeed possible. I was lost, but now I’m found. God says “remember” to show us the steps of the journey on which He has changed us.
How we relate to the past will ultimately dictate where we end up in the future. It can either remind us of how terrible we used to be, or it can remind us of how far we’ve come.