Bring a trash bag with you when you go out walking and do two things at once. Beautify yourself and America at the same time. You don't have to clean up everything at once but overtime it will make a difference.
How many times while waiting for a prescription to be filled, your car to be fixed , or some other waiting game have you sat and waited and complained about the wait? It's not a waste of time-it's an opportunity. Get off your butt and walk it out.