needed advice

hi i was going through meditation and everytime i get to the point where i am goin to seperate or better feel myself seperating and seing dis picture of light in my mind i would stop and ruin the experience.  i have had other moments like sleep paralysis which for sum reason i get those countless times and have the strange feeling of something is calling me lik i am drawn to it.  i always get scared i dont know why i am afraid and i want to do this but i dont go through with it its disapointing. thanks