The best way to tackle whatever life throws at you is to square it up and complete tasks sequentially, rather than let them overwhelm you cumulatively. Knock out a chore or two, rest, then go on to another. Don't worry about how others do things. Go at your own pace. Before you know it, you will have finished projects you thought would take a long time to complete.
Try not to procrastinate. For me, when I'm on the computer, I tend to jot down notes and leave them on my desk. I had been meaning to clean up a year's worth of mess for some time, but put it off because I thought it would take forever to straighten out. The more time that passed, the more I had to sort through. Finally, yesterday, I set my mind to it. I even missed part of an NFL playoff game. But you know what, it was only the first half of the game. Once I concentrated on the task, it didn't take me as long as I thought it would. Had I gotten on it sooner, it wouldn't have taken any time at all. Now that I have everything in order with my notes, it'll be easier to access whatever information I need. From now on, I'll put everything in its proper folder. Same with computer files. Delete whatever is no longer necessary, and have everything else in its proper folder.
Perhaps being in edit mode with my manuscript has me conscious of polishing. I'm not a housekeeper, by any means. But, now when I see something that needs dusting, I just go ahead and do it. I've even starting noticing mistakes with movies and TV shows I watch. One that really bugs me is the Christmas movies that are supposed to be set in December, but have trees in the background with full, green leaves. This is wrong, wrong, wrong. I wonder if anybody else notices this?
Oh well, no one is perfect. I know I'm certainly not. But, I'm attempting to get better, one task at a time. Complete it, then move on to the next one - without letting them stack up and overwhelm me.