The people who participate in it make all the difference. The excellences that serve you well in lecture classes do not serve you at all well in seminars. In lecture classes, you are expected to copy, memorize and regurgitate what the professor has already thought. By contrast, in seminar classes, you are required to be much more active, because you have to read the material critically and try to seriously think it through. In seminars, there are few lectures.
Expectations ought to be different.
Expect to be confused. Angry at the texts. Expect to get more questions than answers, and expect to begin to reflect on how to address those questions on your own through reading and writing. This is quite difficult, and may sometimes feel like you ve been thrown into the deep end without a lifesaver. But know that everyone feels this way.