Visit Japan, South Korea, and certain EU countries I’ve never been to yet. Also probably spend 2 weeks back in my home country to visit immediate family and some friends.

Probably a bikini inspector at my favourite beach... Seriously though the Bibbulmun Track.

Do a total renovation of my flat

Prioritize exercise. Try to gear towards being able to run a marathon and doing some strength training and yoga.

Cook more for myself. I don't think I'd go full vegetarian, but I'd probably have less meat dishes overall.

Try to learn Spanish or Portuguese using one of those quick learning methods.

Take at least two cross continent trips. One would be between the two inhabited North American coasts. The second would either be Europe from Portugal to Finland, Australia, or the Americas from North to South.

Maybe live in a low cost Spanish or Portuguese speaking city for a month.

Book a private jet to go to California with my family. I've always really liked the idea of California and I also have a really good friend that lives there! 😃

Bike trip on the Panericana from Punta Arenas to whatever is the northern most city in Alaska. Or if I have less time but cash to burn, do it in an ultra-light (A bit like Blyth Cape-town Cape North expedition in the 90's http://www.trike-expeditions.com/CapeToCape/capetocape.html )

Travel somewhere nice

depends. If i somehow had money id spend it in a walkable beachside town. If i had the same finances as now id sit at home and relax cuz thats free lol.