The more we seek happiness in work, the more unhappy that we will be. If you can turn your hobby into a paying job, that is really awesome but most people can’t and need to hold a real job to make a living. That is why our lives outside of work determine the quality of our lives.
I’d go as far as saying that even when you start doing a ‘passion project’ for money, a lot of the ‘excitement’ is lost — since your agendas start being influenced by the realities outside your intrinsic control. But I’d also argue that we need to find workplaces that align with our values and work with people (and in environments) that don’t lead to burnout, anxiety, etc.