I can totally relate to your thoughts. I thought god was working through me by leading me through feelings in my heart. I had thoughts, and my heart told me if it was wrong or right. I also genuinely believed I had gotten the spirit of Nelson Mandela, and that I therefore was threefold somehow. One good dide, one bad, and one in the middle. I believed that I was supposed to carry this spirit for 8 years, until 2021, that's when I thought the world would end, I would die, and Jesus would return.

I also saw signs everywhere, telling me what to do etc. like the sound of keys or a message from the TV.

Interesting sharing thoughts, especially as you seem to have experienced some of the same things as I.