But we still keep coming back to the same old things Xenia. You want to work for yourself, largely alone, you are happy to delegate a fair bit of you childcare, you want to have other people in your house clearing up your mess and cleaning for you, you even chose to sing as a hobby. That is fine for you. I'm glad you are happy with you life.
But and it is a big but, what makes you happy, what works for you won't work for everybody.
I don't want 5 children. I didn't want to have children in my 20's so I didn't. I don't want to do your type of work and though I have the aporopriate degree and it would have easy to take that route, I chose not to. I don't have a full time job because I don't want one. I don't even want £400k a year. A one off lump sum of £400k would be nice, it would pay off the mortgage, just about, but other than sit on it, or buy more stuff I don't really need or want, what would I do with £400k a year especially given the massive sacrfices I would need to make to get it and the lack of time for spending it. I am very happy with my little business, my part time job, my coursework/hobby and my smallish family. I am quite happy working at home by myself as you appear to be but other people don't want to self employed. They want contact with others , to be part of a team. Maybe they are a creative person or a people person or very practical and they don't have the personal aptitude or inclination to be the boss. That is great too as we can't all be the boss (too many chiefs and not enough Indians and all that) and we need to play to our strengths, lead an authentic life if you like, in order to be happy. We can all lean in to whatever makes us happy without diving in head first - you stand a much better chance of having a better work life balance that way and nothing takes over your life so the children, the husband, the home and the hobbies aren't lovely things to have but just get squeezed in around the work.
You seem to be hung up on the idea that the only way to be successful is your way and that money is the be all and end all. You should know by now that that is not true but you persist with that. The fact that we aren't all little clones of you doesn't make us failures, it makes us different and all the more interesting and worthwhile than you care to give us credit for.