Someone else told an anecdote about being in the Army, and they have it 100% on the nose. Be forced to wake up at 4am every day; start out with an hour of cardio, then spend the rest of the day being physically active; don’t be allowed to crawl into bed until some time between 8 and 10, depending on events you don’t control. Do this every day - excluding Sundays - for two months. I guarantee that, by the end, you will be able to fall asleep almost instantly the moment you are allowed to sit or lay down and know you’ve got at least 10 minutes until you have to move again.
Be sufficiently tired.
Someone else told an anecdote about being in the Army, and they have it 100% on the nose. Be forced to wake up at 4am every day; start out with an hour of cardio, then spend the rest of the day being physically active; don’t be allowed to crawl into bed until some time between 8 and 10, depending on events you don’t control. Do this every day - excluding Sundays - for two months. I guarantee that, by the end, you will be able to fall asleep almost instantly the moment you are allowed to sit or lay down and know you’ve got at least 10 minutes until you have to move again.