Some questions can be addressed with a simple "I'm busy with something" or "Let's talk about that another time".

I'm lucky, I have my own office and hardly ever have to interact with people in person.

I used to say, "speaking of work-related questions—"
and then I’d ask about the job.

Vague empty answers repeatedly. People will get the hint.

"What do you like to do for fun?"
Oh you know, a little of this and that. I like to read.

Be boring, people will lose interest.

People are full of curiosity in a very noisy way.
You simply don't answer and they will stop eventually

Make up random and conflicting stories. The wilder and more conflicting the better. It shouldn’t take them long to realize you’re not going to tell them about your personal life.

I just answer as vaguely as i can without being rude.

Start telling each person a different story Everytime they ask so the don't know the real story

People will learn your lifestyle and will assume unless you can prove otherwise. Better to answer with confidence because that will confuse people.

Change the subject. People love to gossip and add to anything you say.

1.ask them if theyre writing a book
2. ask if theyre a cop
3. ask them what bizz is it of theirs..
4. tell em to farkoff