Fellow 25 year old chiming in. It can be incredibly hard to relax and do nothing. And setting the expectation that letting your mind wander will lead to fresh ideas is somewhat anxiety inducing. You have to be truly comfortable with quiet and stillness. I'm finding Sam Harris to be a good teacher in making progress on this.
Best advice I can give - go away camping for a weekend, leave the phone or be in a no service area. Do that a few times, get used to it. Then for a week.
“take the path to Nothing, and go Nowhere until you reach it.” - Benjamin Hoff
Camping and spending time in the bush (wilderness) away from services may be one of the best ways of learning how to simplify your thinking and reduce your need to be always occupied.
There is something about sitting back with a nice warm drink in your hands, your feet resting on a log near a crackling campfire gazing up as the embers from the fire spiral up amongst the stars that just helps put everything in perspective.
Your focus boils down to the necessaries of what am I going to eat and am I going to be warm and dry if it rains tonight. Depending on where you are camping you could add the excitement of, is something going to try to eat me during the night.
