Opening

When I was smaller, I used to be very open to psychic phenomena; I would communicate with the dead openly, I sense entities, and I was very precognitive and received psychic messages. When I lived in my first house, a dark entity used to torment me in my room at night. I would wake up with dark figures circling my bed, and I wouldn't be able to escape. These experiences I think made me shut myself off from the psychic world, and now my abilities are dormant. Lately, I have been slowly getting back my abilities of precognition and psychometry but not very strongly. I was wondering if there is anyone out there who knows of any methods to remove this block that my younger self has set up in my head. How do you open in general? I am Buddhist and Wiccan, so if that helps anything thank you. As well, I do not believe in the use of crystals or angels, but I would also like to know how to contact spirit guides! As well, are there any specific ways to open your mind to the dead? Any advice against entities or psychic illness (I have read about attracting sicknesses in the psychic realm) or how to deal with the dead? I am sorry if this is a lot of questions in one post, but I feel as if these are the majority of beginner questions, and I wanted to include them into one post so that I am not posting a lot of small, random questions all the time! Also, something that I might have done once or twice when I was younger was astral projection--which I heard can be dangerous but rewarding (and is definitely something I want to try in order to explore deeper into my Buddhist path), so if anyone wants to work on that together, that would be amazing. Thank you in advance.