That feeling you get when you finish a challenging project, write a great shipped email, and get a bunch of feedback from folks throughout the company is pretty amazing. Once I was invited to convert one of my shipped emails into a presentation for a company all-hands meeting. I had a less than a week to get it done, which was pretty hectic, but in the end it turned out great and it was perhaps my favorite memory of my time at Stripe.
I enjoy my current job, and those little dopamine hits I get from checking things off my list as well as the bigger ones from finishing projects, but now only my boss and some teammates notice when I finish something. One thing I learned about myself, is that I really do care about what other people think about my work.