I'm reading The Happiness Project by Gretchen Rubin on my Kindle. I mention it's on my Kindle because it has the ability to highlight passages for later, and I've been doing that a lot with her book.
She talks about many inspiring things she does to be happier, including one that I've been trying to do with good success. Her idea is that if she can do a small task in a minute or less, to just do it. Throw away the candy wrapper on the floor you've walked by ten times. Refill the soap dispenser. Answer a quick email. Whatever it is that takes a minute or less.
I've been getting lots of little things done without taking up noticeable time. It helps free up your brain from trying to remember to do something and from feeling guilty about not doing something really easy.
So, give it a try if you want- if it takes a minute or less to do it, then just do it!