Qualifying as a lawyer when what I enjoyed was building things.

It's never too late to start building stuff! Don't give up!

Fixed that problem 20 years ago ;)

Use a different Firefox profile for work/personal.

Sign-in to personal (while at work) to sync bookmarks if firewall allows. Depending on whether you trust your employer you could sync further personal settings.

Don't sign-in to work profile and no work bookmarks or settings/logins get shared.

Don't get me wrong: multi-account containers are a blessing for those rare days when you absolutely have to log-in to facebook.

What are the differences between a profile and an account?

I suspect the mapping between accounts and profiles is 1:1, but you can have a different profile which is not associated with an account.

Used to experience the same. Eventually had tonsils and adenoids out. Some improvement in frequency, but still used to succumb. Went low-carb (properly) and found myself without _any_ congestion, which solved the initial and subsequent problems. N=1, etc. One paper by Paton from 50's relevant (re pneumonia), otherwise nothing I can find in the lit. Recommended, though, for that and other readily apparent reasons.