(healthy rumination being not thinking over and re experiencing bad experiences in an obsessive, self destructive manner, and instead reflecting and re experiencing in a more constructive manner).
I think dreams and diary entries are important for me to retain experiences for me to draw knowledge out of them. Sometimes I don't fully experience something until I remember it and relive it in my mind, which gives me the opportunity to get something "new" from it every time.
I enjoy looking back at old photos or things from the past (but I only do it when I need to, perhaps every 6 months to a year). I find it really centers me and makes me feel grounded when I forget myself or when I feel "lost".
I sometimes experience the full brunt of empathy during rumination. Something triggers (ne) me to think about someone and their experience (si) then I think about what they mean to me (fi) and how much I actually do care about them or I think about something someone I know has experienced. Sometimes I kind of forget, and then suddenly it hits me and I feel an overwhelming sense of empathy... without anyone else around me.
I've found the simplest way to give meaning to my life is to constantly take the time to reflect on things. Everything from the small smile I got from someone in class, to the sunset at night, and perhaps the theories i've read through the day.
I don't think being caught up in the past is healthy, but reflecting is important to me to get the full sense of the experience. I'm never fully there, so I have to think over it and reflect on it at a later date, so I can fully appreciate it.
What other things do you get out of healthy rumination and reflection on experiences or your own life? how important is reflecting and ruminating to you?