I've found that I can more easily get myself to get things done when I project myself into the future and remember the satisfaction of having done it. The projected nostalgia of a job well done turns out to be a powerful motivator for me.
Conversely, after I'm done with a mundane but supremely boring task like filing taxes, I fail to experience any reward. This makes it just as hard to complete the task the next time. I know it will provide me no satisfaction. It's better at work, where I'm lucky to have interesting problems to solve.
Almost sounds like a "dopamine advance". I think I could do with one (many) of those.