Hi Esther! Welcome to the forum.
First of all, I'll go out on a limb and suggest to you that there is no such thing as "permanent negative impact on [your] spiritual bod[y]," at least at a level most of us are likely to experience. Physical body, yes. Spiritual self, not likely. Everything is repairable with help from your Guides, Allies and Benefactor.
That being said, if you cannot get past your experience and stop allowing it to live with you as a negative experience, that
will have impact on your spiritual self - not permanent, but impact nonetheless. It will limit your ability to raise your vibration to a level where you can have meaningful interactions with your Spirit Guides, Allies and Benefactor.
Next, I'm not a big believer in "Evil" entities in the traditional western sense of demons and devils. I believe there are spiritual entities that may be antagonistic towards us; entities that have their own agenda that do not necessarily include our well-being; entities that may desire to use us or our energy for their own purposes; even entities whose mission is to cause us harm for reasons comprehensible only to them - but by and large, I believe that our Guides and Allies protect us from these things, sometimes in spite of ourselves.
As has been mentioned previously in this thread, I think that using drugs without Spirit or good intent alters your perception of reality in a way similar to that experienced by Shamans and Sorcerers but ineffectively: More like a reflection of true
seeing, not
actually seeing. That being the case, you are not necessarily anymore exposed to spiritual influence stoned than you are "sober".
As for connecting to your Guides, as we say in St. Louis, "There's a hundred ways to get to the Arch, which one do ya want?"
Connecting to your Guides, Allies and Benefactor is a very personal Path and you need to figure out what rings True with you individually. There's probably over a hundred people (if not more) that frequent this forum that could tell you how they do it and what's been successful for others they've known, but in the end, it all comes down to what works for you.
Take a look around in some of the posts from the past and see if anyone says anything that has that ring of Truth. Send them a Private Message and see if they're willing to discuss this further with you. We're a pretty open and sharing bunch around here; I can't imagine many would turn you down.
Good luck and once again, "Welcome!"
