Are there actually people who are genuinly happy?

Are there people who wake up and look forward to living another day and are not dissatisfied with their lives and do what they enjoy even when they have some doubts about it. Do they not question all the time if they are doing the right thing or ask themsekves what they should be doing? If yes, what do they do different? Can you be a moral and a happy person at the same rime? Are they happy because they are doing good stuff or because they are privileged? How do they remain happy even after pushbacks?