My father would say this all the time when I was growing up. His list of chores for me was usually lengthy. Yard work, cleaning, more yard work, etc. Mostly physical chores. If he saw me dragging, or complaining, he'd say "You don't know it yet, but being able to do something you don't want to do is a great strength."
Another thing he used to say that, in my teenage mind, would piss me off was if I said "This sucks" or "I don't want to", he'd simply respond with "Good."
As an adult, inundated with chances for instant gratification, laziness, video game playing, and procrastination, I can still hear my father's words.
One of the things TRP has continued to support is my self-pride to be able to do uncomfortable things. Working out, eating well, keeping my apartment clean, turning the TV off, reading a fucking book, even maintaining personal hygiene. Last night even, I was dead tired, dropped into bed, but forgot to brush my teeth. I thought, "Fuck you, get up." I did.
So remember... even though life can sometimes become predictable and mundane, do something everyday that you don't "feel" like doing. Does it suck? Does it tire you out?