God, I... I'd argue it's probably 2009 and 2010, as the issues kinda ran into the two years. That was the worst height of my anxiety, panic attack disorder, started to literally lose my sanity (was hearing and feeling things that weren't there, and the only thing keeping me from crossing the line is I knew this wasn't real, but god damn did it not feel right to me), and took being in an impatient for about 2-4 weeks at a program (thankfully not a hospital, but other mental health program). Same year, finally got on disability, some more resources, and I've been generally... doing better..ish?
I won't say I'm ever good, as I'm still struggling with figuring out more aspects of my disability, as I recently just got tested for some stuff that's now officially documented, including my inability to process thoughts on a quick scale, jumble up information, memory difficulties, and among other things. Though other things aren't officially documented (though noted at least), such as my spacial recognition and trouble with direction issues, as well as my increasingly developing photo-sensitivity issues. Still, I absolutely say 2009-2010 was the worst two years of my life, ever.