is b.com corporate secretership is tough?

Yes, it is tougher if you compare it with your individual B.Com degree. At least it may seem difficult to you in the beginning but as you progress in the course with persistent hard work this won't seem you difficult anymore. Here, always keep a habit of making your own notes and referring to the book modules on regular basis.

Nothing is difficult if you really want to work hard. This is a theoretical course and involves more efforts in remembering the relevant sections of different subjects.

So, you should be ready to put effort in that.But with proper effort, you can surely achieve it.

I hope you will go for your dreams without any fear!