One more tiny correction:

I got married at 21 and my daughter was born when I was 23. 

Parenting

Due to learning English, I started to communicate with people of different ages from other countries. I noticed that most of the people of my age study at the University, work and travel a lot, engage in sports, and sometimes go to disco clubs, cinema and other entertainment places. My lifestyle differs very much from theirs.

I got married in 21 and my daughter was born when I was 23. By that time, I graduated the University and had 2 years professional experience. After 5 years my son was born. I am happy to be a mother and to have two kids. I enjoy taking care of them, teaching them and playing different games. My husband and I are trying to raise smart, hardworking, honest and kind kids. We usually go for a walk in a (the?) warm season, roller skate or go sledding. When the weather is bad, we play computer and table games or make craftworks at home.
I think, that twenties is the best period for pregnancy biologically because women usually don't have too many chronic health problems. It is also easier for parents and kids to understand each other, to become good friends and enjoy many activities together.

On the other side hand, it is a great responsibility to be a parent. 24/7 we must think about the health, education, safety of our kids. Sometimes I don't have a chance to go out for weeks. I can't sleep during the nights when they feel bad. Work, kids and home cares take all my time. I stopped even think about disco and fitness clubs, sports, beauty salons and so on. It is hard to change something in our life, for instance to move to another city or country. My husband and I want to travel to Spain, Singapore, Canada and Australia, but we can travel there at least in five years, when the kids grow up a little bit. At the same time, we don't know if we will have enough money for travelling or it will be better to spend this sum on the kids education, for example.

I hope we have properly planned our life, will be able to provide worthy future for our kids and will find the way to satisfy our own needs too.

Anyway, to be a mother is the most important role of a woman and the greatest happiness.

Hello! You have very good English written skills! You only made a few small mistakes! :)