So many people look down on those with "menial" jobs—trash collectors, janitors, gas station employees, and so on. The truth is, if we didn't have these people, the world would be a much worse place (until we have fancy robots doing everything). We need the icky stuff to be cleaned, boxes to be shipped, and buses to be driven. Please don't look down on people with these types of jobs; many of them are very intelligent and nice (and deserving of better pay and benefits). Make eye contact, say hello. Acknowledge.