>I mean, some of this seems "reasonable", to me at least.
Maybe you could try talking with someone who's been there before that could answer all of your questions (try a priest? Maybe he'll know someone who'll be able to answer your questions). That would be a good way to go if you really need to answer those doubts. Don't feel ashamed about it: it's better to do it! I also have been in the same situation as you; some of this stuff seems reasonable for some time but it's like porn: yesterday people were so sure that it being bad for you was "irrational religious nonsense" and it looked like it wasn't bad at all, but some time after that all those studies came and now everybody knows that stuff harms your body and mind. Faith in God is more rational than putting faith in your own reason, as curious as that might be; God is eternal and beyond yourself and he loves you anon: trust in him that he is the only one who won't betray you and wants what's truly best for you!
>But it seems because of the above episode, its apparent that I have only managed to ignore these ideas and speak and exhort and warn against them but I truly haven't been able to get past the stumbling stone of accepting the Lord Jesus as ultimate
Try talking with someone who will answer of all your questions as I said before. I was in something similar to you and getting deeper into Christianity (reading good books and praying) helped me a lot and answered a lot of my doubts; this will allow you to expand your mind and understand stuff from other perspective. If God had the mercy to get you out of that Occultism stuff he will also help you totally erase it from your life and achieve peace.
If you ended up learning all of that occultism stuff because "it was there and it got me kinda curious" then relax that it'll go away soon; just don't get into it again.
> In a sense I haven't loved him with all of my mind. I am quite terrified and I now find these ideas racing through my mind and all I can do is call out to God and one time in church I felt I had to get alone and pray in tongues. I really don't feel much peace now, it is robbed away by remembering my own disgusting, cowardly pride on that day and thus my susceptibility to my old futility of mind.
Just ignore the thoughts, anon. Satan plays 666d chess against you inside your head to either get you sinning and/or make you suffer and the only way to defeat him is to fully focus your mind on God and being humble otherwise you're playing his games and he'll laugh at you. Remember this anon: those thoughts aren't yours so don't panic. The devil likes it when you panic, trust in God and he will bring you peace. Pray a lot too, God will answer.
God loves you and understands that you're not perfect. It's expected that you won't be perfect, anon. But God still loves you and forgives you and wants you to improve. God is pure love and He makes what's wrong into wonders. Don't fall into the devil's tricks: remember that God wants you to stop sinning and fully forgives you if you sincerely ask him; the guilt is only inside of yourself. Change that guilt you feel into repentance so that you won't fall again as that's a good way to go. The devil is as strong as you let him be and he wants you panicking. God wants you in peace. Ignore those thoughts and focus your mind entirely on God and he will give you rest. Keep on going and God will give you what you need and will give you peace.
Peace comes from Humility and Repentance anon. A part of Humility is realizing that you may fall and can't be perfect by your own efforts; only then will you overcome what's stopping you from becoming better, anon. Pray as that's the best you can do. Godspeed!