How do you spend your money you won from gambling?
of course on things that will make you happy.
It's a proof of success but we all know its just a temporary success, honestly I would not even call it success as my definition of success in gambling is long term. But for the sake of discussion yes we can call it that way.
Mine is different since I don't win big money in gambling, what is big for me cannot buy expensive things, but I can treat my friends for a drink using all the money I won.

That is generally how money won from gambling gets spent, you treat your friends to food and drinks, and it’s gone. Isn't that what life is all about, anyway? Beyond covering basic needs, the point of earning money is to create wonderful memories.
I understand people who view gambling as entertainment those who win a bet and freely spend the winnings because I do it myself from time to time, and it feels really good.
Of course, when you win good amount of money from gambling, you need to use the money to have a good time, those things you love to do you need to do it because it is actually very beautiful and fun for you to use the money you won from gambling to enjoy yourself and to have more fun.
Whenever I win some money, especially good amount of money from gambling I spend it on basic things and I also go clubbing it is usually a beautiful experience.
But mostly I use it to buy something that will last for example new TV, games, phone etc.