Same for your audience, to some this picture is nice, to others it's not really special. Etc. Plenty of instances in the galleries or Critique Corner for your reference.
Two, you have to know and remember you're shooting for yourself. If other people don't get your works, understand the logical reasons why they don't. Then either refine your story telling (composition) or technique. You have to impart a sense of yourself into each photograph, something that tells people, this is a "red ryder" photograph. Don't be blind to criticism but don't be mainstream as well. Strike a balance.
You should start analysing why something is not worth shooting. Is there a messy background, the light is not right, the lens limitation, etc etc. My recommendation is that you learn what you can from the situation and then think / imagine what is needed to make the shot happen. Come back a different time of day? Hunt for a similar situation elsewhere? Remake the situation with the necessary equipment? Etc.For example, when I travel overseas and am walking around with my camera, sometimes I stop at a spot and try to figure out if I can shoot it in an interesting way. I wonder if Iím just wasting my time if the subject itself is not worth shooting.
Take mental snapshots of the world around you, expand your imagination.