If you had a job working for someone else and you got caught sleeping on the job, they would probably fire you. The reason cited would be theft of time. It sounds harsh, but it's true. You've stolen time from your company. They were paying you to work and you were sleeping!
Rarely will you hear the phrase "I don't have time" come out of my mouth. I have been given 24 hours in each and every day I am alive, and I choose to make the most out of them. There is always time!
The question I ask of myself is if I want to make time for this or that. If I really really want to do something, I will make time.
I get a lot of questions about how I run my business and homeschool. The answer is that I really want to do BOTH things, so I do them. I have never felt constrained by time at all. While my son is doing his seat work, I work. There is NEVER a point in time where I'm not doing SOMETHING. (Right now he's working on math, in case you're curious.)
While I don't get paid with money to homeschool, I do get paid to run my business. If your jobs (homemaker, mother, etc.) don't pay money, try to think about the benefits that you get "paid" from doing whatever it is you're trying to do. How can you use your time more wisely? What are you doing that's "stealing" your own time? (I have some guesses...Pinterest? Facebook, maybe?)
And just for the record, I DO sleep...at least 8 hours a night.