Its really not hard, like kulver said I used a nick that's a common word. Daemon is both used all over, and is a somewhat common nick on forums.
The only other thing that could connect me is my email, which I use strictly for this handle and stuff associated with it.
Now I have tossed out other info about me, none of which has ever been published in any way shape or form and I'm not in any newspapers or online publications.
Even a search for my real name only shows my fb, email for fb, myspace (can't delete it?) and skype info.
Honestly I'm not worried about it, an admin who didn't know me might be able to d0x me, because tthey can see my IP. But last I heard my IP from home traces to Texas for some reason (I'm on.the west coast) and I don't even use a proxy/vpn? Lol go figure
As for my phone #, it also doesn't show up on any searches I've done. It tracks to my hometown (where I'm not) but doesn't reveal anything else about me.
Not trying to sound arrogant, but its hard to d0x me. Just the way it is lol, and mostly coincidence. The only thing I actively picked to hide info is my email
As for securing yourself, read what skidiot said and get paranoid. Very paranoid...