I'm pretty sure I'm the laziest person I know.
Why do you feel like you're so lazy?
I never do anything to help others.
While not helping others is looked down upon it isn't required of you. People will likely think you're lazy and annoying if they ask for help and you consistently refuse it though. You should try to be someone that people can rely on.
I didn't realize that I was that bad. I should try to help my friends by doing many things for them.
I'm glad you realize that and want to do something about it. I'm sure your friends will appreciate it as well.