Most people will receive at least a few mild concussions during their life, yes.

It is only the unlucky people who get hard enough concussions to have symptoms for a very long time. Hitting your head is common, and will happen to most people in their life at least a few times. It's just that sometimes, you hit your head too hard and get a concussion. And even getting a concussion is common, but it is less common to get a concussion that affects your life for weeks or months afterwards.

One mild concussion isn't rare and isn't likely to change you permanently. The real danger is in more severe concussions, or repetitive mild-moderate concussions. In these scenarios, things can become much more complicated (longer recovery and further complications that you want to avoid).

If you only got one mild concussion, your chances for recovery are extremely high. Be careful not to get another concussion, don't be too anxious, sleep and eat well and you'll see you'll get better over time

Also, if your mTBI happened just a few days or weeks ago I would recommend resting for a while. Take a few days off from school/work and avoid using your smartphone or computer more than 1-2 hours every day during your rest period.

As long as you don't get more concussions, you'll be fine. I recommend that you don't do anything where the risk for concussion is high (such as contact sports, if you like them) until you are 100% fine. Also, if you still have symptoms, it's recommended that you rest for a few days and return to normal activities gradually.

Be positive! Anxiety is the worst enemy of concussion recovery and will extend your recovery time - you don't want that. We're here to help you whenever you just need.

Have a great day and smooth recovery from your mTBI,
-ProAgonist