Can give some practical advice or pointers about how to become interested in something? What do you practically mean by "engage"?
Second point: even though something is "only" in your head, it doesn't necessarily mean it's easy to change.
The question then becomes not whether it's possible to become interested in something, but whether it's worthwhile to put your time and energy into doing so as opposed to doing something you find interesting from the start.
Engaging is pretty well understood. Its putting your full consistent attention on a task, and attempting to perform it better.
I find some things interesting at some point, and not interesting at others. The thing doesn't of course change. Its all me.
One of my past manager told me that the trick of making a boring job interesting is to introduce a layer of abstraction to the task.
For example, if you have to right a lot of boiler plate code then write a code generator.
Edit: your example seems like a good instance of applying this _well_, but I would not tell anybody this as general advice.
I'm far from perfect with it, but it has changed the way I perceive work forever.
I grew up on a farm. There was a lot of that. It took mental discipline, which most folks may not have an opportunity to develop in this hypercharged media world.
At the end of the day when you have taken a large tree branch and turned it into a stacked pile of chopped wood you feel a sense of accomplishment. It doesnt feel quite the same when you've cleared 4 QA UI tickets.