Having a cold is no fun -- your head hurts, your nose runs, and you just feel downright bad most of the time. You can possibly get rid of a cold fast, but there's no way to cure it. If there was, we'd probably know about it by now. However, you should look on the bright side. No matter what, your cold probably won't last for longer than a week, and there are all kinds of things you can do to ease your discomfort while you're sick.
Use a Neti Pot
Neti pots are effective for sinus passage irrigation, and may help you get rid of a cold fast if you use it daily. Yeah, the neti pot is as gross it sounds. You're essentially pouring salt water up into your nose with a little flower pot-looking thing. In spite of the unavoidable ick factor, these can provide some quick relief.
Drink Herbal Tea
There are some teas out there designed just for colds. You should look for one that contains echincea, which is an herb known for boosting the immune system. I've used teas that contain this ingredient when I've had a cold in the past, and it does seem that when I drink these teas regularly, my cold is shortened by at least a few days. Not only can these potentially help you get rid of a cold fast, but they might also soothe your symptoms. There's not much that feels better on an itchy, scratchy throat than some soothing hot liquid.
Use a Humidifier
Get some Vick's Vapo Solution and use it inside a dehumidifier in your room as you sleep. This is especially helpful if you're being kept awake by a lingering cough. Just be careful and don't put it right next to your bed or curtains because the steam is incredibly hot and could be considered a fire hazard.
Not only will antihistamines help you get to sleep, but they will also dry up your congestion. There's nothing more annoying than trying to sleep while your nose is dripping like a faucet. You don't want to try sleeping with a piece of tissue stuck up your nose to absorb the moisture dripping out, so do yourself a favor and take some Benadryl (a popular antihistamine) instead. Antihistamines might not actually help you to get rid of a cold fast, but they will probably make you feel much better while you wait out the worst of it.
Get Plenty of Rest
Colds are kind of minor when compared to other sicknesses, but that doesn't mean you shouldn't try to rest as much as you can. Most people don't stay out of work when they have a bad cold, but maybe you should if you can. I am a firm believer in rest to get over a sickness. If you have a job, either try to leave early or don't go in at all and just stay in the bed for a day. If you don't have a job, let your housework and other obligations go if you can. See if your spouse will help you out with your kids.
Drink Plenty of Fluids
This may sound just as cliche as getting plenty of rest, but it's important when you're sick with anything. Fluids, particularly water, can help to wash infection out of your body, which is useful to get rid of a cold fast. It's no miracle cure, but if there was ever a time to drink as much water as you can, it's while you're sick.