That was four years ago, and I was back to my baseline self in about two months.

A month ago I was diagnosed with severe apnea, and since starting treatment I feel like a different person. I wonder whether the apnea was worsened by modafinil four years ago, and that was the reason for my constant wearing down. Maybe I'll do an experiment just to see, but I don't need stimulants anymore to be productive, not even coffee.