[manmal]

It has already been said that burnout can stem from a "bad boss", i.e. abusive, or your work is not appreciated. I think it can also stem from not having a (perceived) choice. If your worldview forces you to do this exact job ("I'm only good at this particular job", "I would lose my/our home for lack of money", "My parents would not approve me quitting"), then this can kill your enthusiasm, and also result in a burnout. And it will spread, and infect other areas of your life, and you might wonder why you are actually here. Just building up a choice can help a lot. This could be an alternative career that earns less, but you realize that you can actually get by on less. Or you make the decision that your parents' approval is not something you need anymore. Given a choice, the fun might or might not return. I'm pivoting to design for this very reason. I love building things, and I'm good (maybe great) at software, but programming is just not an activity I feel comfortable doing all day.