How easily forgotten

So I got through most of the day today without even thinking about it. Since I've been sick, I've been more inclined to take a two hour nap in the afternoon, simply because I don't have the energy to make it through the day. (Sounds so dramatic, I know.)
Anyway, as I lay in a borrowed bed, I was halfway to dreamland I suddenly jerked awake, freaking out.

I'd forgotten to make my paper crane.
Since it was only 3:42pm, it wasn't such a big deal, really. I still had the rest of the day to make one.
What made me freak out so badly, is how easily I had forgotten.

I've been doing this seven days now, and so I figured that it would have become a habit by now. Yet, this self assigned task completely slipped mind as I spent the day with my brothers at church.

It made me realize, how trivial things become in our lives, once we decide to do them.
Sure, we say we're going to start a "good" habit, like reading our bibles or running. Maybe it's just me, but I think that when I'm starting anything new, I do really well for a couple of days, but when I don't have accountability, I simply forget. Because the "new" thing becomes mundane, like brushing your teeth before bedtime. It is just something you do without thought because it is something you have always done.

So what is the threshold? When does something new cross the line to something mundane? And if we continue in that mundane task long enough, when does it become habit?
And, if it becomes a habit, does it really hold any meaning to us at that point? It is just something we do without thought, after all.

Is that what reading the bible everyday supposed to become? Mundane? Purposeless?

I doubt God would think so.