Here are some more of my thoughts on delusions.
When I had a psychotic episode, it started as a sudden persecution delusion. I had experienced some strange coincidences over several days that I was pondering in the back of my mind, and then suddenly one more strange thing happened and I saw the "explanation". I went from normal to delusional in a split second. I thought I had accidentally offended a huge nationwide conspiracy of voodoo/Satanists with mind-controlling pink baseball caps, ... etc.

After the initial week, I began to wonder why they were putting so much effort into persecuting me. Gradually a grandiose delusion developed to explain why this huge conspiracy was bothering to persecute me.
I have always had very low self esteem, and I am also a somewhat imaginative and creative person. I imagine lots of possibilities, and it is hard to choose one. I think that is why I have a problem with delusions.
The day before yesterday, I worried that somebody who had installed a towel rack in my bathroom may have tampered with my toothbrush. I had to get a new toothbrush. That's not exactly a delusion, but it leads to delusions IMO.
O.k. that's my thoughts for what they are worth - two cents maybe