The sign for "difficult" or "hard" conveys the notion of facing challenges or complexities. Here's how to sign "difficult":

You can also use your facial expression and hand movement to show exactly how hard something is. If something is extremely difficult, you can place your hands harder on top of each other with an exaggerated facial expression.
Learn how to sign "easy."
Learning to sign is a great start. For the moments that have to be right (a medical appointment, a parent-teacher meeting, a legal conversation) Ava connects you with a credentialed ASL interpreter over video in the Ava app, on demand or scheduled ahead. Available 24/7, with live captions included.