Not to brag, but I don't get sick very often, maybe once a year. When I do find myself a little under the weather, there's a few things I like to do for a faster recovery. I have no idea if any of these are 100% accurate, but I'd like to think they do. None of these will immediately make you feel better, but they'll help quicken the process.
Drink lots of water.
This one is a no-brainer, but it can be hard to do sometimes. I know when I'm sick, I definitely don't think about it. Water can help flush toxins out of your body, makes you hydrated, and can help you feel more awake and energized! If you're not a huge water drinker like I am, Tea also helps.
If you're sick, it's honestly better if you just take a day off and focus on feeling better. If you're worried about going to school or work, it's better that you don't spread anything. Let me just say, I'm fairly certain the last time I caught something was because someone behind me in a class was coughing through the entire lecture.
This one goes with the last point, but sleeping will help your immune system fight off any infections. It's good to take some time off and get any extra sleep you can.
I like to wash all of my clothes and bed sheet, because they're what I wear and touch the most, especially my pillow cases. This will help get rid of some germs and stop them from spreading. It's also good to disinfect anything you touch often, like doorknobs and table surfaces.
This one also sounds like a no brainer, but seriously if you expect to feel better soon you should be taking some sort of medicine. At the very least, it'll help with your symptoms, so you're not couching or sneezing every couple minutes.