The human mind can not create. It can’t actually come up with a new idea. Anything you think of is a remix of information you already have.
Confining yourself to the same activities and places can make your ability remix grow stale. There are only so many ways to combine the same ingredients.
So in order to increase your mental palette for remixing you need to gain new experiences, absorb new ideas. Do something different. Drive to work a different way. Try a new restaurant. Talk to new people. Changing your patterns can do wonders for idea generation.