That's why I go for walks. I believe it frees up time for the brain to think through stuff without getting interrupted. Sure it might be a series of incohernt throughs and ideas, but that's fine, now they've been processed and the mind can relax.
I also like doing this and I'll try to focus on what I'm seeing during my walk which helps my brain not to wander worrying about work or other stressors but it allows me to be in the moment.