Can I strangle my oldest child? aka Writer's Block

Argh. My oldest is a smart kid, tests very well (34 ACT), straight As through middle school, high school has been a mess. I chalked up freshman year to a failed experiment, we tried a homeschool virtual school, we weren't organized enough, he got depressed, messed up his grades, he briefly saw a counselor and he did great in public school sophomore year. Then last year he screwed up some grades by just not doing work. He didn't know how to approach something, didn't bother doing it, etc. He didn't seem to be depressed, so we tried to approach it as a discipline issue. Just fucking around on his phone? IDK. He seemed sobered up by the realization that he was really going to miss out on opportunities for college based on his grades, despite great test scores. We set up some new routines. But he's having the issue again, it seems to be getting even worse, mostly with writing papers. Avoiding doing work, lying to us about writing papers, spending hours "writing" where he's just messing around on his phone or even just sitting there staring into space if he doesn't have his phone with him. Any idea for helping someone past writer's block? The lying to me about is really driving me crazy. And he's making college plans that depend on him getting decent grades this year, but it's not happening in anything he needs to write for.I told him he needs to go talk to his comp teacher Monday and actually ask for help. He hasn't gone yet because "What can she do to help me?" I'm going to call around to see about some kind of psychological screening. We both have ADHD, statistically 3/4 of our kids should have it. But I don't see symptoms outside of avoiding writing. Maybe anxiety? He doesn't seem upset, but he just shuts down. Every thing he thinks of writing "sounds wrong." Any other ideas? Things we can share with him? Approaches we can take?I still haven't finished the Smart but Scattered Teens book I was going to use to help with his brother, maybe that can help, but it doesn't seem like organization and forgetfulness so much as avoidance. via /r/Parenting https://ift.tt/2r2ux7u