Are you stuck in the rut of doing corporate cruft? I'm there, and it's unbearably boring. I'm finding inspiration in personal projects. Currently I'm investigating the effect of gerrymandering in the House elections. While I have strong personal political views, I'm doing this purely as a pet project. At the same time, I have to experiment with datasets and data sources outside of my day-to-day area of expertise. I don't have a deadline, but it's interesting. And I'm doing it in a Python, which is a new language for me.
Bottom line, it's a challenging problem, and a language challenge, so at the same time I'm expanding my skills.