Find time to be alone. Watch and listen to the sights, smells and sounds around you. Try to deduce the structure of what you see simply by looking at it, imagine what elements it may be composed and how it interacts with its environment.
Try something new. Opportunities for new experiences present themselves everyday. Swinging by that new Ethiopian restaurant could open up culinary vistas, and experiencing cultures abroad could give your a perspective you have never had before.
Ask questions. Asking questions of people may garner answers that reveal truths you never imagined. Asking the right questions when traveling could lead to a story that becomes an unforgettable moment in your life. Asking questions requires you to engage with the world around you in a way observation cannot.