I'm married now, but I was a single mom for 5 years, when my kids were 3 and 1 up until they were 8 and 4. I've been married for almost 20 years now to a wonderful man (doesn't this sound sappy?) whom I met in grad school. Yes, it can happen.
What's really hard as a single mom, is that you are spending your life juggling work and home, doing everything for everyone. You live for getting them into bed so you can relax, and then you realize there's nothing to do. No one to talk to, etc. Boring and depressing . . I used to get the kids to bed, and then walk around my empty apt thinking, "Why was I so looking forward to this?"
Going back to school was one of the best things I could do for myself. Yes, I met my spouse there, but more importantly, I interacted with people, I thought about stuff, I studied, I developed a confidence that my failed marriage had taken away from me. And I healed during that time, too. I learned to be a single me, and be proud of it, and that I didn't need a man to make me feel complete. I could live successfully without one.
And it was at that point, of not "needing" a guy, and not "needing" to lean on anyone else to have a life -- that one asked me to consider a life together. And, honestly, I did NOT want to sacrifice the me I had just gained, to go back to being half of a whole. So we took our time . . . and I set boundaries. Never again would I give up what I sacrificed to try to make a failing marriage work. I was tough. (and loving) And it worked. I am married to a guy who does housework, who raises children, who works hard, and mostly to someone who is demented enough to absolutely love me -- no matter what I do or don't do. I don't always agree with him, he's not me, but I always respect him, always love him, and we are always faithful to each other.
The other thing that is cool about school, is that with or without meeting a "special guy" there, it is a place where people are thinking and talking and doing, and it's a place to meet some people who will encourage you, and challenge you. It's tough, cuz the truly "single" people there are out doing stuff for fun while you have responsibilities at home, but you'll get through that. And it will help you to grow, not just chase the clock, the job and the children. And when you are actively builidng your own life, you are setting a fine example for your children, who will be incredibly proud of their mom, and incredibly proud to follow in your footsteps, or to make a path of their own, because you have shown them by example that it can be done !
Good luck ! I hope you link up with some very smart and courageous women on this sight, so you have people on your pc you can chat with !! But I hope you are also able to link up with some friends who will challenge and encourage you, swap babysitting, etc., and be face-to-face friends, because we really need local friends when the chips are down as well as when we want to plan fun stuff to do with our kids.