Do you think you can reminisce to much?

I constantly think there is something wrong with my brain, so I force myself to reminisce all the time. It's somewhat akin to when you repeat a word over and over and it becomes foreign to you, that is what I experience with my memories and it furthers my thinking that there is something wrong with me. In a different way, I think reminiscing can become unhealthy if you're allowing the memories to interfere with your present, other than that I think it's wonderful to be able to reminisce.