Does it always feel like you're just hanging onto your last shreds of sanity by a thread? Do you feel like the tiniest change in plans could just send you absolutely reeling and over the edge? There's also the possibility that you're so used to the lack of serotonin and dopamine that you feel nothing at all. Well, these memes are for you. Between the seasonal depression that's building as every day grows shorter, and the regular depression, ADHD, anxiety, and other mental afflictions, life can…