Wow. I'm a Christian and I attend church...but I've never heard people come right out and tell each other that they're sinning just because someone's being over emotional or they're day dreaming and such. I think that if someone is going to point those things out, they need to look at themselves and see what sins of the bible they're doing.
In the bible it does talk about some of those things being sin. I'm not sure of all of them, but from what I've studied of my bible, thats what I've read so far. BUT, we're all people and we all sin. You cannot point your finger at someone and tell them they're sinning and totally let them know they're horrible or whatever for it if you yourself sin. [by you i mean other people who point fingers].
(I'm gonna get into a bit of faith talk for a moment)
With that, it also plays into my faith that Jesus Christ died for our sins. We're all sinners. I'm a huge sinner. My goodness, if you knew the stuff I did you'd either shriek of shock or you'd nod your head in agreement. By all means, I'm no better than anybody else. The only thing that sets me apart [in my faith] is that I believe Jesus Christ is my savior and Lord. I believe He wipes away all sins if you just ask and believe.
I don't think we should be freaking out and going "oh my gosh, thats a sin, oh no!", because its our nature to do so. We'll continue sinning until we die. I think the big picture is that someone can take away your sins and you'll be made new.
So for Christians who want to pick out every sin in the bible and condemn those who sin...they've missed the point of who Jesus is and his teachings. All in all, we're to love Him, love others, love ourselves.
So don't you listen to those who are condemning. They haven't figured out what its all about. You are YOU. You were created an INFP, because we need you as an INFP.

I do hope that I was able to shed some light for you. I've dealt with the same issue.
EDIT: All in all, the bible shows us that anything put above God is a sin. So if these things aren't getting in your way of putting God first, then I personally wouldn't say its sin. (I'm talking about day dreaming, taking care of yourself, and the likes) If those things get in the way of acknowledging that God is first, thats the problem. But I can't say those things in themselves are sinful.