What's the one thing you still struggle with in French, no matter how long you've been learning?

I've always been curious about the different challenges people face when learning French.

Everyone seems to have that one thing that remains difficult, even after months or years of practice.

What is it for you?

• Understanding native speakers?
• Pronunciation?
• Grammar?
• Gender of nouns?
• Speaking confidently?
• Vocabulary?
• Something else?

And if you've managed to improve in that area, what helped you the most?

I'd love to hear about your experiences!