I'm upset with the members in my group for a massive project
Are they not doing their share of the project?
I'm annoyed with them for not working on the project properly
It can be really hard to stand up for yourself when you feel like you're the only one doing work on a project. But, they shouldn't get credit for your hard work so be open about your concerns! If you feel afraid it might help to tell the teacher.
I don't think I'm doing a good job. I hate when people try to boss me around, I need to assert myself.
It is good you see the need to assert yourself. I think you could try to set up a project meeting and have the others help you.