The best answer to this question will be your personal experience. Rather than being paranoid, try to go on as normal and use hindsight to determine if you need to slow down.

There is a big difference between being aware and being paranoid.

You may need to learn how to make life and lifestyle choices that reflect your concussion history. In some areas, you may have to make some changes. For example, alcohol consumption will likely be problematic. By that I mean, getting a light buzz may cause a hang-over or worse.

But, this is not going to prevent you from pursuing a full life.

Try to give up on the paranoia and replace it with being aware.

You should be fine.

My best to you.