"No one will miss me when I'm gone." This is absolutely FALSE. When someone dies, whether by suicide or other causes, we always mourn them. Grief, rage, sadness, etc. are incredibly common when there is a loss. In terms of suicide, it is categorically untrue to think that your death would somehow go unnoticed. Suicides bring on all the emotions associated with loss and have an extra helping of guilt. Perhaps when someone is saying, "no one will miss me," what they really are saying is "I am feeling so isolated." Another example of what "no one will miss me" could really mean is a feeling that you are a burden.