Stop for just a moment. What do you hear? Make a list for 2-5 minutes.
Pick one of those things and write about it for at least 5 minutes.
It’s important to stop and pay attention to the world around you. You can’t just pay attention to people for character ideas. You need environments, conditions–the things that surround you every day.
Leaf-blowers. Think about how noisy those are. Try to wedge the noise of a leaf-blower or lawn-mower into a description of the surroundings of your latest main character.
There are so many little details at play every moment; ignoring those will do you no good. Learning from them and remembering them will really add a touch of realism to your work.
So stop and write something else, paying specific attention to the environment surrounding your character.