Something that one person considers to be worthless just might be considered valuable by someone else. I think the old saying is that one man's trash is another man's treasure. You might also look at it as always seeing something positive, even in something as seemingly worthless as garbage.
I know people who always see the positive. I try to be like that myself. I would much rather enjoy the everyday experiences and rejoice in the hidden beauty that is so often missed than to spend unnecessary time and money going for the lavish expensive things that so many covet but which all too often are really over rated.
There is so much good - everywhere. All we have to do is open our eyes and our minds. Now, I'm not saying we should wallow in dirt and filth, but we can appreciate the less extravagant. We can also do something about the filth and make it so that everyone might enjoy it!