Seeing a mom and pop store on a corner is a memory trigger for me. The other day, I noticed the corner GE appliance store in nearby Caldwell, New Jersey, has windows full of “going out of business” signs. That triggered a memory for me of the corner candy store across from my elementary school in Schenectady, New York.

It was a candy and comic book store which catered to us kids. The first time I bought myself a treat–all by myself–was in that store. It was probably a Milky Way bar. I remember saving up coins from my allowance, taking them to school, crossing the street, and going into the store. Buying the candy was something to look forward to at dismissal time at 2:50.

Several years ago, I was in Schenectady and found my old school by accident. At that time, the store, which looked like a bodega, was still there. But it’s gone now. The display windows are boarded up. It seems to be just a home now.

Things change, but sensory triggers bring back memories. Music is a memory trigger. Tastes and sounds are too. When my husband, Evan Marshall, smells honeysuckle, he thinks of the terrible allergies he had as a kid.

What are your memory triggers? It’s easy to miss them, so keep some paper with you. Write them down. (“Seeing that store reminds me of…”) Even if you’re not sure, write it down. Keep the piece of paper in your pocket.