Depression or bipolar disorder seem like a better fit. ADHD would manifest more in “short term” issues, i. e. difficulty getting through a workday. The fact tha

Depression or bipolar disorder seem like a better fit. ADHD would manifest more in “short term” issues, i. e. difficulty getting through a workday. The fact that they can, apparently, hold down a job they don’t enjoy, and seem to quit voluntarily to improve their situation (going for an opportunity more than getting away from s/t) also don’t fit. In the end, the point might be mood because the first step is the same, and a therapist will be far better figuring it out in person. The specific labels also seem not to perfectly fit the actual conditions, which are more fluid than what the existing lingo suggests.