[nchlswu]

You sound like a very self aware individual (hard not to be if writing is your passion).

But...I think you have to remember you're 16. Nothing you do is ever set in stone, regardless of age and everyone goes through changes. Teens go through changes that are a more volatile.

Try reframing it in your head. Personally, it seems like you're just "not into" writing right now. There's nothing wrong with that. There could be a deeper root cause, but I doubt you'll truly find it.

Keep writing (I guess you'll have to) and things may clear themselves up. Self awareness isn't always a great thing ;)

[nate_meurer]

Yes, absolutely right. All bets are off during puberty. You're undergoing massive physiological changes, caused by hormonal changes the likes of which you'll never see again (until menopause, if you're female). I had a lot of this trouble as a teenager; it often seemed like I simply had no retention, and I consistently forgot skills (mainly math) that I had thought to be committed to reflexive memory.

My bet is that this stuff will be sorted once your body settles down. And maybe well before then.