Over two decades ago (in my early 20's) I participated in quite a lot past-lives/regression workshops, with no success.
Later, maybe an year or so after, I started to have vivid dreams, all about my past lives, night after night, always the same way: lighting strike hit me when I fall asleep, and straight after I found myself in past life, from the previous one in my first dream, to a very distant past later much later. Few times I didn't want to be incarnated any more – I headed toward the strong light in the sky feeling a great joy, but I felt the presence of some «entity» that pushed me down to the earth.
What I can tell is that I was always more or less the same kind of person. Most often dying young as a soldier, or as a child from some diseases. I never could reach an older age.
In my present life, I was a very sick child, but doctors helped me to survive. Just when I turned my 40, I had an accident, so I barely stayed alive. Now I am 46 and I feel relaxed about life and death.
I have a feeling that I don't really know how to get old - with an obvious reason :)
This repeating model shaped me so strong that I am more and more closer to my true, individual and unique nature. My guess that's the essence of going from life to life. Not paying off debts, not good or bad karma, just simple evolving until one become fully authentic and mature, so can go to the next level of existence, which can be very different for each of us .
This is my experience I wished to share. I hope it can be helpful for some of you.
Any comments or thoughts are welcomed :)
Best wishes.