When you're single—and especially when you live alone—you're on your own when it comes to getting stuff done around the house. You've got no one to split chores with and, unless you've got a pet, no one to take care of but yourself (though that doesn't mean you'll be lonely, either.) But since you have to take care of all your household responsibilities by yourself, you're going to have to know how to do them if you don't already. From cleaning and repairs to budgeting and self-care, make sure you know how to do these things:
Deal with Pests
No matter how clean your apartment is or where you live, you're bound to see a bug or a mouse at some point. And if you live alone there won't be anyone else around to deal with them for you, so you'll have to learn how to get rid of pests on your own—whether it's a matter of getting the right insecticides or traps or simply letting them out of your home is up to you.
Make Small Repairs
Unless you intend to never hang anything on the walls, you'll probably have to learn how to spackle holes. You also will likely experience wear and tear on your furniture (like a loose shelf on a bookcase) and other things around your home, so it's important to know how to do some easy repairs. For anything major, of course, you should contact your landlord, but it'll pay off to know how to take care of quick fixes on your own.
Maintain Your Clothes
You probably already know how to do your laundry, but there's more to it than that. It's also important to know how to iron different garments and get rid of stains and wrinkles. And it can't hurt to know how to do simple repairs, like replacing a broken button or patching small holes. You never know when it will come in handy.
Create a Budget
If you think you don't need to worry about your budget until you're getting married or buying a house, think again. Your budget doesn't have to (and shouldn't) control your life, but you should be as in control of your personal finances as possible. At least be able to calculate how much of your paychecks go to rent and other expenses, see how much you can save and how much you have left over to spend on non-essential things, and keep track of it in whatever system makes the most sense for you.
Cook More than One Meal
Going full gourmet isn't necessary, but if you only know how to cook one edible meal—like spaghetti—you'll likely wind up spending a lot of money on takeout. If cooking isn't exactly your thing, that's okay—just take the time to learn how to cook a few simple meals that you like so you can rotate through them. Bonus points if you can cook something that'll impress your friends at a potluck.
Actually Enjoy a Night Alone
This is a big one—even if you never learn to do any of the above, you should learn to love being by yourself. Being social, spending time with friends and family, going on dates—those are all great things, but at the end of the day, you should be your first priority. It might be challenging at first, but actively enjoying spending quality self-care time with yourself and not just reluctantly staying home because you have no other plans is important, and will improve your overall quality of life (whether or not you learn to cook and spackle.)