That's a straw question, and yes, it's done quite a bit. There are quite a number who go to medicine, but in Minneapolis, there are quite a number of extremely successful real estate agents who happen to be pharmacists as well. I'm in a job that doesn't require me to be a pharmacist today, but I would have never gotten the job without having been one. And who knows, you could be the Home Depot founders too (Rutger alumni).
Realistically though, it's fairly straightforward. Now, if you are going to refine your question to "starting another career and keeping the same standard of living", well, that's a harder question to answer and much of the answer is motivation and sacrifice.
And this career I have right now (more using statistics and actuarial mathematics), I have the willpower and motivation to walk away from it if the future makes an AI good enough to replace me (I doubt it, because the point of my existence is to check the AI derived models for sensibility, correctness, and completeness), but I know my next career is going to be professional gardener, because no robot can make a garden look as beautiful as a $45k a year Master Gardener.
But, be aware that no career is inherently stable. You should always be willing to walk away from a bad enough situation as the only defense capitalism gives you, the freedom to sell your labor to whom you choose.
