To echo the narrative of sacrifice, I will add a story as well.
When I was about 4 years old my parents put me in pre-k in an attempt to start me early in a kindergarten class. After some time, the teacher's realized I was not communicating or making friends with anyone but this one boy. They recommended that my parents take me out of school and work on my communication skills. My mom made the tough decision to put her career on hold and stay home with me and my little brother to work on speaking and listening with us. Apparently that year made all of the difference, I was later accepted into kindergarten and made lots of friends, some of which I am still friends with today. My mother (and father of course) sacrificed a lot to send me and my two siblings to Catholic school, where we obtained a great liberal arts foundation. They went without, so we could learn and have the best opportunities in life. She died of cancer in 2012, and I miss her everyday. Please tell your Moms how much you love them while they are still a phone call away.