Hypothetical: You double your salary overnight

Pay off my house in a year would be first. Then invest majority of remaining after a year. I’d buy a couple of toys I’ve been wanting, a side by side, stuff like that. Probably look for some investment properties after my primary home is paid

You hypothetically married? That's important...

I'd figure out how to pay off house very quickly, create a really nice "fun" budget - maybe 20% - for travel, toys, etc. and save the rest.

It's just a matter of when you want to be done/retire.

Probably put in a pool and outdoor kitchen first. Then invest half and use the other half on toys and having fun. Hunting camp would be high on the list of things to spoil myself with

This basically happened to us.

Bought a nicer house, saved a lot, spend more. We save a higher percentage of each additional dollar but if you have any self control at all it gets easier and easier to save and spend at the same time if that makes any sense.

Cut spending even further to accelerate investments.

Save around half to continue building towards early retirement and kids college. Buy vacation/retirement home in mountains. Once STR is set-up for the weeks I'm not there, I'd turn around and get another vacation/retirement beach home and repeat w STR. Won't care if I make profits off of them as the LT goal is to split time there once retired early, just taking in extra income to go towards costs/mortgage

Sounds like a great time to think about your long term life goals. How close is your nest egg to allowing retirement (if you want to fully retire)? If you have a ways to go that's the first issue.

If you have kids are their educations mostly taken care of? IMO it's good to leave them to cover a small amount of the school debt - if it's all covered many kids take it for granted instead of appreciate your foresight. But if you cover most they won't be crippled by debt.

Do you have aspirations of leaving a charitable legacy? It can be something you contribute to even before you die after all.

I don't see the benefit of paying off the mortgage but everyone is different on that.

It all is really what is each person's spend threshold for happiness/comfort.

Every dollar past minimum standards of living creates a lot of opportunity either way. Charitable giving, maxing out gifts to kids, investment or spending on higher quality vacations or hobbies.

Doubling from $50k to $100k doesn't radically change your life, especially if you put a majority into savings. But if you start getting to where you can max all retirement accounts you start opening up a lot for personal pursuits.

That's just staying ahead of inflation at this point.