As you identify the triggers you need to start learning coping skills to manage them as they come up. Like if you see an empty chair and start thinking it's you, then start learning to change your self talk. Argue with yourself, out loud if you have to. If every small thing is a trigger, then you're still in the middle of the storm. Or, if it is a trigger you can avoid, then do it.

For example, that song "Tears in Heaven," by Eric Clapton. I avoid that song at all costs.