I wasted $15,000 because I couldn't do paperwork

I'm so ashamed and embarrassed. I spent $25,000 on a van for a potential business venture (totally on a whim), changed my mind three months later, and decided to sell the van. But I couldn't deal with the all the paperwork and steps required, so I sold the van to a dealer for $10,000. What a waste of money. I am so bad with finances. I hate myself sometimes. Anyone else do ridiculous things to avoid paperwork?

EDIT:

I'm not rich, I inherited the money and thought I was making a good investment in my business.

I'm waiting for an ADHD assessment, I don't know if this is actually ADHD related. I don't have any other diagnoses and I've been seeing mental health professionals my whole life. I am constantly trying to figure out what's wrong with me.

Also going through perimenopause, and a lifetime of anxiety and depression.