If you want to be one of the great singers then it is essential that you exercise your voice daily. If you take any days off then your voice will take an immediate turn towards bad habits.
It is vital to your singing career that you find a way to sing every day. The easiest way is to learn guitar and accompany yourself. You can also look up karaoke versions of all of your favorite songs on YouTube. The best way to make sure you’re keeping up with good technique is to join a choir either through school, church, or community-run choir. There are many ways to find local choirs in your area you can try using Meetup, or check in local community boards like at your local library or other places like that. You can also hire a voice coach if you have the money for it. The price can range anywhere from $40 on up to $150, and even higher potentially, for a half hour lesson. Schools are a great place to look because graduate and undergraduate students will be the cheapest and still have a lot to offer. There are also some studios that have multiple students which has the added benefit of occasionally running recitals so you can perform in front of others. Regardless of how you choose to sing make sure it happens every day.
Getting sick is one of the few exceptions because sometimes you physically can’t. You still can sing, but it is possible to damage your voice under those circumstances so be careful. If it hurts don’t do it! You will more than likely need sometime to recover back to your full voice afterwards. A lot of technique can go away when you are on vocal rest and it is different for everyone which areas are affected. It is up to you to figure that out. For me I lose my breath control first, so I usually do a lot of breathing exercises to get my lungs back up to full capacity. One of the things that affects most people is called vocal fry which is a creaking sound you can make by closing of the back of your throat and phonating. It is common in most people especially in the morning but it is even more common when you get sick. So do everything you can to talk in a higher voice after getting sick and most importantly if it hurts or wears you out then stop doing it.
Make sure you practice every day and you can become one of the great singers. I have a friend who could possibly be the next Justin Timberlake or Sam Smith because he has a serious passion for singing, and more importantly he practices every single day. So make it happen and reach your g