Don't need to be a billionaire for that. Just good investments instead of wasting money on shit noone needs to impress people you dont even like.

It's not trivial but also not reserved for just the 0.00000001% of ultra-rich.

Check what you REALLY need, apply a lil buffer for the unforeseeable, wait till your passives meet that and be done with whatever.

Know a couple, they're making 18k/month after taxes. They rent an expensive large poser-house in poser-town, drive expensive poser-cars and live big in every aspect. Travel once a month most expensive, waste 3k a month on dining outside or delivery, No investments, no savings. Every penny left is burned on desires.

And they hate their jobs while doing everything to have to stay there....