Is there a name for downplaying your suffering because other people have bigger problems?

I am looking for a term to describe the line of thinking that goes something like "I hate my work, I am sick all the time, I am depressed, I can't find happiness. But I should be happy. Those problems don't matter. All my problems are so insignificant, there are little. They're just some stupid first world problems. I have it good, I have food on the table and a loving family. There are millions of people who have real problems, people living in severe poverty, starving to death, being bombed."

I think about this often, it came up when I was talking with someone with mental health issues and I remember him telling me that this way of thinking has a name/is a common symptom that occurs in people with a specific personality disorder, although I cannot remember what disorder he claimed it was. Also this was more than ten years ago so it might have either changed or my memory of this event changed.