I act less non-human now then I did when I was younger.
From peer pressure I was bullied for it. Though, I wouldn't say that was so much "furry" as being "therian". I still live with my parents, those traits now feel awkward to me in general, though.
I have a sense of a phantom tail to a degree, though, much like any limb I can sort of "forget" it. I don't lap up liquid from a bowl, it just seems silly as by my human form, the tongue is simply not designed for it and I don't like plain water because as human I don't like the taste of water as much. I whine, growl and mumble under my breath, and when I am defensive or stressed I feel like I should bark but it comes out as words, now, I tend to use voice over bark for play except with dogs, I feel like howling when melancholy but by wild traits I have no pack or family. The only time I walk on all fours is when occasionally playing with my parents' pets or when I scuttle upstairs sneakily (is crafty).
I have a tendency to want to chew, pencils don't survive long with me, and I tend to break up lolly-sticks, if not I'll chew whatever clothing I'm provided with (sleeves, shirt collar, etc) or what not, a recent habit is that I occasionally chew on my tongue and gums because of hunger and anxiety.
I'm too scared to be a lifestyler, though, I live with my parents who don't know about it and would probably get the wrong idea. I also have a paranoid sense that I might get targeted at by furry haters if I associate my human self with the furry community. I've never gone to a furry con, though I am a relatively new fur, but for now "net furry".
And I dig the label "furry", I think it's a very fun, awesome word. I also tried crossing it with "therian" to make "furian" to describe what type of fur I am in more specific occurrences
.
I'd say just do as you do, no need to force behaviour, unless you want to, of course (then you can just mimic, but I say it's best you do keep in your comfort zone), plenty furries have very human-like fursonalities and focus more on the idea of their character looking like a non-human, that's quite a bit "humany" in itself.