Your bedroom setup controls your sleep. It also controls your focus. Light impacts your deep sleep. Room temperature impacts it too. Clutter adds stress to your brain. Small tweaks tonight will sharpen your thinking tomorrow.

Set your thermostat to 65 to 68 degrees.
Take screens out of your room. Charge your phone in the kitchen instead.
Get blackout curtains or a sleep mask this week.
Keep only water and a book on your nightstand. (1/2)