There is something interesting that happens at the edge of the forest, where it meets the grassy plane. Diversity springs up. Two ecosystems meet each other and, as a result, both fight as well as mix together. This generates more unique traits than you would expect from each of them on their own. There are many examples in nature of this effect.
An analogous consequence emerges when the human mind travels to different places and cultures, be it physically because the vessel it lives in (a.k.a. the human body) goes to foreign lands or imaginarily through its innate ability to conjure up situational chimera.
Creativity abounds on the edge of habitats and virtual worlds. New ideas and innovations test their potential in the judging light of competition. Shankar Vedantam speaks about this in his podcast Hidden Brain (https://www.npr.org/2018/07/02/625426015/the-edge-effect). He often has fascinating topics that he covers. The edge effect is when different groups mix and become something beyond what they would be on their own. This happens in nature and even among foreign exchange students, but most importantly this is what can stimulate your own mind.
All of this may sound abstract, but consider how you become inspired when you travel. That train journey through the desert, or maybe across the mountains. That flight in a small plane across the rain forest. The car ride with a local through the outskirts of that megalopolis. Walking around in a strange city at night. And so on. You know the feeling, the stream of impressions on the senses, the thoughts that boundlessly float to the surface of your consciousness.
It is the forest meeting the plane, where new ideas find their source. Seek it out. The diversity is immense.