I think it would be very hard to sell a self-help book on subjects like this just based on your personal experience, because the first thing a publisher wants to know is what qualifies you to write such a book: professional qualifications and solid experience in the field are important, or
you need to have professional experience in researching and writing this kind of book.
It's frustrating, I know, because you've probably got loads of good ideas and experiences that you've gathered informally. But that won't be enough for a publisher. A publisher will want know that the book is right for
If you feel that what you have to offer is your personal experience, you could try to team up with a professional writer of these books, so that you're contributing the personal angle, and she or he can shape it into something that a publisher can sell.
The Society of Authors has a register of members who do ghosting and other joint projects so you could have a look there:
Sorry - a bit missing!
A publisher will want know that the book is right for a particular part of the market, and is also trustworthy in the professional sense, not giving advice that might turn out badly for readers, and so on.