I was given this advice a long time ago when email first gained popularity:
“When you write an email, think of it as a postcard. If you wouldn’t put it on a postcard, don’t put it in the email.”
If you are using the internet, it’s difficult to avoid data collection. I try to avoid posting any information that would be useful to anyone engaging in identity theft. For example, I never give my real birthdate when requested. Clear cookies occasionally and keep in mind that there are millions and millions of people out there in the same situation.