To encounter new things, you often need to see things in the periphery. The central vision captures things of interest as you understand it now, but the things in the peripheral vision, which might not be of significance for now, might turn out to be life-changing in the end.
So the knack is to see the scenery as a whole, and wait for something to "pop out" from the unconscious into your attention.
What we see is massively parallel in nature. Things are captured in the visual awareness at the same time. Brain's resources as regards attention, perception, cognition, memory, action cannot be allocated to all that are visible at one time. So you need to distribute your concerns diffusely.
How to come to terms with the overflow of the periphery is one of the most essential things in life.
Look at a painting like "Children's Games" by Peter Bruegel the Elder.
Here's a larger file. Notice how things are visible in a massively parallel way. And then let little things tickle you.
Peter Bruegel the Elder. Children's Games. (1560).