It’s 5 a.m. You’re asleep. It will be another hour till you have to drag yourself out of bed and start your day. Wrong.

Beep! Beep! Beep! Beep! Beep! Beep! Beep!

An alarm clock goes off, startling you and jerking you out of your slumber! Nooo! Congratulations; you share your room. Your sister (or brother) resides in the same 10-by-15-square-foot area as you—and she’s a morning person!

Through the momentary headache, you decide to put the episode behind you and go back to sleep. One more hour, you think to yourself. But a sudden blinding light shines through your eyelids. For the next hour, you struggle to fall asleep with lights flickering on and off, a noisy hair drier, the opening and closing of drawers and the bings of text messages. The restless hour culminates with the mocking of your own alarm clock. Rise and shine!

You’re not one to grumble, but perhaps you’d take this in a better spirit if it wasn’t for the fact that this is an everyday occurrence.

Ever been in this type of situation? Is your roommate a night owl? Does sharing a room with a neat freak stress you out? Wish your roommate would just stay on her side of the closet? Lots of us have experienced the challenges that come with living-peacefully-with-thy-roommate. But the good news is this: There are rules that will help you share your room—happily.

Everyone faces challenges like these when they share their room with a brother or sister—because we all have human nature. And human nature tends to thinks about the self. We all wish our roommate would just understand how we operate and live with us on our terms. But more often than not, the key to peacefully living with a roommate is to try to sacrifice by living on their terms. When each sacrifices for the other, we end up meeting in the middle, and both roommates are happier.

Let’s look at four simple rules that will help you happily share your room with your brother or sister if you’re younger, your dormmate in college, your flatmate after graduation and even your mate when you get married.

Communicate

PYC camp director Wayne Turgeon once said: “Overcommunication is better than undercommunication.” That is fundamental to keeping a camp running smoothly. How much more so for someone you live with year round. Communicate! If your roommate does something that annoys you, tell him or her in a kind way—and humbly, because you probably do things that annoy them! Chances are, they might not even be aware of it. Or perhaps you’ll realize that you just overreacted because you didn’t know where they were coming from. Miscommunication can often lead to problems, not just between siblings, but between people in general.

Talk to your brother or sister and work out a way that you both can benefit. For example, if you are a morning person and your roommate is not, lay out your clothes the night before. This will eliminate the disturbances of closet doors and drawers loudly opening and closing and hangers sliding along rails. Instead of turning on the bedroom light, see if you can get by with just a closet light or bathroom light. If you are a night owl and your roommate goes to bed early, be considerate when you enter the room and try to move around softly so your brother or sister can rest undisturbed. Make sure you communicate with each other so as to minimize the effects of conflicting schedules. Be conscious of the other person, talk it out, and make the small changes that will help you each enjoy living with the other.

Give Them Their Space

Every now and again, roommates need privacy. Learn to discern the balance between not leaving your brother or sister lonely and giving them space. If you feel he or she looks stressed and might want to talk about how the day went, ask once, “How’s your day been?” Then respect their right to either open up to you or not. Don’t eavesdrop on them or read their journals! That’s the surest way to get your roommate to never want to share anything with you. If your roommate is on the phone and you sense the conversation getting a little personal, offer to leave the room if you can. Always consider your brother or sister’s need for privacy. In balance, absence makes the heart grow fonder.

Be Considerate

Even if your roommate has a ridiculous pet peeve—maybe they get bothered when all the books on your shared bookshelf are not aligned at the right angle—oblige them. It might mean nothing to you, but realize that you could be stressing them out by not being considerate of their preferences. Try doing it his or her way, even if it seems absurd to you. Personally I like to unplug unused appliances because I once read that 40 percent of the electricity they use is consumed while they are turned off. You’d probably never have known the reason behind my idiosyncrasy if I hadn’t just told you. Maybe your roommate has a pet peeve that’s based in scientific fact! Give him/her the benefit of the doubt. Try being considerate of everything that really matters to your roommate. After all, wouldn’t you appreciate him or her doing the same for you?

Make Sacrifices

You don’t have to draw a line down every closet, shelf or desk you share with your roommate. If occasionally they do end up spilling over into your half of things, consider your tone when you approach the issue. They could be having a rough day, and you complaining about a shirt of theirs hanging over your side of the closet will only make it worse. When you share a room, make sure you’re really sharing, not taking every square inch of your half and a little bit of theirs. Of course you can always discuss the matter with them politely when the time is right. There’s no getting around it: Sharing means sacrificing, which means giving things up. Sometimes you have to sacrifice a few of your conveniences to gain the friendship of your roommate. And isn’t it worth it?

When you think of it, living with a roommate can be a real blessing. Considering the amount of time you spend around one another, your roommate could become your best friend, your confidante, your comforter. Of course, it takes effort and energy to make those years go smoothly, but if you communicate and sacrifice, you open the door for some great friendships, some great times and good laughs and life-long memories. Strive to look past those early-morning alarm clocks, those constantly beeping cell phones or any number of sibling rivalries that are bound to crop up. And don’t take for granted all the good things your roommate does and the good times you’ve had—and can have! Work constantly to put the share back into sharing and make rooming with your roommate rooming with a friend!