Some concepts:

How can you train boredom:

On boredom and Deliberate Practice:

The skill-building aspect of deliberate practice, which is a flavor of deep work, can be boring and tedious. Training to tolerate boredom and mute its impact is crucial to mastering this kind of deep work. If you don’t develop tolerance for boredom, you may struggle with the deep work required in the course and beyond. Tolerating boredom in this context is likened to an athlete tolerating muscle soreness