52 now, hit £100k about 10 years ago. Like some others, a mixture of graft (the majority), getting lost and good luck.
Abusive childhood in a ‘naice’ MC home. Saw that education was the ticket out. Grafted. Drifted a bit post-uni and ended up doing higher degrees. Joined the civil service (that did not make me £100k).
Then got into abusive marriage - the personal side was still fucked up. Had 2 kids. Financial abuse plus lived in the middle of nowhere and had to work flexibly around the kids. Decided management consultancy was only feasible option.
Graft, graft and more graft. Travel too, which was hard when the kids were small. But hit £100k due to building a reputation for being hardworking and committed, plus having a talent for what I do.
now I’m 2 years out of the abuse, the kids are teens and live with me, and for the first time I am able to start actually enjoying it.
So I suppose what I’m saying is, not everyone’s trajectory has been straightforward. And it can happen despite dire circumstances, if you hit that combination of talent, hard work & luck.