When I was young, I used to have so much time, but now I’m too busy.  Before I go to high school, I used to spend lots of time playing games with my friends, but I just don’t have the time anymore. I always used to get up early and stay in school all day. In the evening, I used to watch TV or play computer games, but now I have to study. I love music, and my father used to take me to concerts.

One possible version 

3a