Love this question!
I'm an extremely frugal person, who is also extremely social, so here are a few of my top tips to save money - and still have a life!
Stop eating out! Cooking in is not only healthier, but it's extremely less expensive. If you want to make it fun, choose a few new recipes a week that you meal plan/shop for. Batch cooking/meal prepping/only shopping for what's on your list also helps.
BYOB Dinner Parties! Being social and getting together with friends is awesome - but it can get pricey! Start hosting bring your own booze dinner parties, where you swap who cooks, everyone brings what they want to drink, and it's a fun night out.
Airbnb out a room in your house! Depending on where you live, this can be a great option to subsidize your mortgage/utilities/expenses - and you can control the calendar. Yes, you have to make some adjustments, but the amount of money you'll bring in will help ease that weirdness.
Get a side hustle! Making more income to pay down debt/save for your next investment property is a must. Do some freelance on the side or start your own business - bring in more income is key!