Decision Resources

Do we have specific modules or workbooks on decision making? What about choosing a niche?

I’m indulging in confusion and perfectionism. I have a business idea but keep thinking thoughts about needing to plan it all out before leaving my job. I don’t have confidence that is a totally viable idea that could generate income. Should I start it as a side hustle? Just jump in a go for it because I can manage my mind around making it work?