Regarding the nature of a “good job” vs/and/or a good career, the two different types of ancient Greek “happiness” as relayed by Arthur C. Brooks in From Strength to Strength:
Hedonia is about feeling good; eudaimonia is about living a purpose-filled life. In truth, we need both. Hedonia without eudaimonia devolves into empty pleasure; eudaimonia without hedonia can become dry.
A few more of my favorite passages from that book that work well together:
Hold your success lightly—be ready to change as your abilities change. Even if your worldly prestige falls, lean into the changes.
If you base your sense of self-worth on success, you tend to go from victory to victory to avoid feeling awful…You need constant success hits just not to feel like a failure.
Satisfaction comes not from chasing bigger and bigger things, but paying attention to smaller and smaller things.