Meditation issues

While I am tryng to meditate , it happens to me that I fall in some kind of state where I see pictures , pictures of past lives perhaps(That's my interpretation), but I can not stay in that state , in the moment I see the picture , I automaticaly get "thrown out" of it.Anyone whit similar expiriences , and if yes , any help on how to control it ?

You need to simply learn to focus without focusing. I would suggest lucid dream work.