I can relate, I try to paint all my stuff to the best of my ability, and do I am ponderous!
Those are looking good! Having a nicely painted army is worth the effort!
I'm not sure where you set up your painting stuff, but I've found having a spot in your place that's away from the tv, computer, etc and is free from all the energies and distractons of your living room really helps.
If you're able to get some sort of audio going in the background like podcasts or audio books, that also helps keep you there. As Adam from Tabletop Minions has said, sometimes he just paints cause he wants to listen to his podcasts.
Third, you want to have a permanent space well set up and organized so you have all your stuff right where you need it, and don't have to interrupt your flow rooting through a cluttered closet for stuff for example,
Fourth, have different stuff goin on at different stages, so If you just feel like basecoating, you've got a unit that needs that, if you feel like painting some of those checkers, you've got a unit that needs that, if you feel like working on a vehicle, you've got one of those on the go, etc.
Finally, if you just can't seem to get into it, and make yourself sit down and paint, you can delve into some other aspect of the hobby to get inspired. Coming up with themed lists, reading the history of your army, and checking out bits-sellers' stock online are all things I've found can give you ideas for little conversions and painting details that will get you excited about the project and help bring the army to life. Looking at photos and tutorials from other painters can also give you ideas for neat effects, details, conversions that you'll be stoked to try on your own models.