What's the hardest thing about learning English?

Now is your time to share what you find hardest about learning English! Do you find improving your grammar and pronunciation the most difficult? Perhaps finding the motivation to keep going? Or maybe something else entirely?

As an English Community Tutor (and someone who is also learning foreign languages), I can give you tips. Your feedback will also help me (and other teachers/tutors) make English lessons even more productive.

So don't be shy, let's discuss! :)