What does the future hold?

I sometimes get jealous of the other students at the university because they seem to have had more "full" lives than I have had. And they're often younger than me. I haven't done much with my life so far, and that is a big regret right now. I know I shouldn't have them, but I do. These students are often childless though, and I daresay they wouldn't have had such fantastic holidays and thrilling lives if they had been single parents for the past 15 years. I don't regret having my daughter; she is the reason I get up in the morning. And I don't regret breaking up with her father because he's the world's biggest waste of space. It's hard though, being a single parent. I sometimes think of my sister, living abroad with her own little family. She's travelled, and met people. She's got a young family now though, and my daughter is nearly grown. I guess we're just doing things a different way around. I'm just a bit dissatisfied with my life right now. I have to finish my nurse training though, but I only have another 9 months. I want to do so much but there seems so little time to do it in. How did I get this old?!