I have respiratory disease and as it's progressed I hit a wall of tiredness around 8 or 9pm especially if I have exercised. I can only really sit around and read. Watching things is too much. Even reading seems to spark my brain and I then keep going until 12 or 1am until I am worn out. I then feel groggy and less effective at work the next day. How can I switch my brain off to get the sleep my body actually needs?
I'm early 40s and need to get a handle on it or will struggle more as I get older.