I think that you've barely dove into it, and are still a beginner. I'd suggest learning basic energy manipulation, for that's easy to prove to yourself :3 (feel it in your hands/numbness ftw x3), after a few months, you should continue doing psionics, and take a hardcore long dive into magick. Read all the occult books you can get your hands on, the articles, information, history, redo your book of shadows, memorize some things, etc. You need to have some hardcore dedication to even get in to magick, let alone use it. And if you haven't performed any spells in succession for 5 years, then I don't think you have that. You need to start off from square one, and learn as I said before through hard work and dedication. There's not much we can do to prove magick to you, only you can prove it to yourself, and I wouldn't recommend asking random people to prove shit to you, as we are not a three ring circus ;).