I was wondering, what's the most important piece of advice I could give to anyone starting their own blog?

I didn't have to wonder for very long. The answer is obvious. At least now it is. I wish it had been obvious to me, back when I first started.

Keep it anonymous.

Don't let it be traceable back to you.

Don't tell your family where your blog is, and don't tell your friends where it is. Because, if you tell anyone where it is, they will read it. At first, you might think that you'd want these people to read it. You'll probably write some things that you're really proud of. You'll probably write some things that you want to say out loud, but which you are unable or unwilling to say out loud.

It will be very tempting. You must resist that temptation. I wish, with all my heart, that I'd resisted that temptation. Things would be very different now, if only I'd realized the obvious, back when I first started.

Back before it was too late.