How do you know that people who fail always judge life from the negative side? I wonder how far you have researched this, because I don't think everyone who fails is blaming other people, circumstances, and even the government.
I say that because I have seen people who fail in certain businesses, but still have gratitude for being able to start a business again from a different direction and also still have the spirit to continue to rise from the adversity that he has experienced. So I conclude that not all failures blame people and are ungrateful even though basically they (failed people) don't say this kind of thing to anyone.
Failure doesn't mean that a person isn't grateful. Success isn't the only thing that we should be grateful for. To be grateful is to appreciate what we have despite all the circumstances. We shouldn't look down on people who fail because we don't know what they're going through just to begin and try to build up their lives again. Failing doesn't mean that we shouldn't be grateful because in every failure, there's always another chance to start over.