KISS 😗 Keep It Simple Stupid, or Keep It Stupid Simple if you prefer, a good Blender exercise for reducing distraction and endless iteration is to just keep it simple.
Take a simple blockout object (in this example from the Game Asset Workflow: Complete Blender Guide) and have fun with it. See the world in a grain of sand! 🌍
Links:
Game Asset Workflow: Complete Blender Guide on BlenderMarket (aka SuperHive)