A lot of happiness thinking centers around focusing on achieving something, having the right job, “I’ll be happy when...”
But like that doesn’t work because we keep moving the goal post on ourselves. There will always be “one more thing” until I’m happy. Happiness is found in the journey to achieve these things.
Whenever people complain about their pay, like the author, I always ask them what they want to buy. Most people don't have an answer ready - they just believe in some general sense that they will be happier with more money. Sometimes they say stuff they could afford already, other times it's something that really requires time, rather than money.
But like that doesn’t work because we keep moving the goal post on ourselves. There will always be “one more thing” until I’m happy. Happiness is found in the journey to achieve these things.