You can care about your career and your self improvement while still maintaining healthy boundaries around the mental effort expended for your job. We’re in it for a long time but jobs come and go

Next time around I'll be sure to get born wealthy so I don't have to worry about it. But it's incredibly privileged to be able to do the sort of work we do compared to standing in a factory production line or working away from family. I enjoy my work, but I know if the company fails it's not my fault and I will be working somewhere else tomorrow.

Not much of my life is spent at work. I spent the last 10 years optimising the ROI from work down to a suitable compromise of time vs money.

That's fair, and I'm not saying it's as easy as flipping a switch. We are all social human beings wired to easily get caught up in the day to day panic, especially when someone is breathing down your neck. But you need to consider that somebody breathing down your neck does _not_ have your best interests in mind. You are master of your own career, and any shitty code you deliver will have your signature on it. It's all about setting boundaries and being able to push back when people are unreasonable. This is where the "not caring" is an invaluable skill. You are an immovable mountain in the face of a hurricane.

At the end of the day, YOU are the professional. If an amateur decides that you are going too slow, that doesn't mean anything--they can feel free to hire more engineers or whatever needs to be done, but the onus is on _them_ to ante up. No matter how much you love your job, you're probably going to have multiple throughout your career so you need to focus on yourself first and foremost.