Only your own life can be that book, you just have to re-read it and see where it went wrong, by your own standards. It’s very good that you’re not humble and can draw clear lines (afaiu), but along with that you have to check flaws in your reasoning and only draw lines where you can see the canvas clearly.

professionals can figure it out for me

A smart move, but be careful to not “outsource” it to them. You are the decision maker, because you are the one responsible (as in “will experience all of the consequences”). They will just go home and eat their dinner.