I essentially gaslight myself into thinking I’m finding the activity fun. I also find that music helps, as does finding a rhythm in the activity.

Of course, I’m generally fine with long tasks anyway, so your mileage may vary.

Try to research the task, and why there should be importance placed upon said task (whether it’s the end result or something else).

Most things have some importance to them, it’s just that I don’t often take notice of it until it’s pointed out to me - so I try to make it so I can point it out myself, if that makes sense.

To Do lists coupled with the above helps as well, though to each their own.