'Difficulty brings good fortune' is the line's saving grace. When you've exhausted your brute force and find yourself completely stuck — unable to go forward, unable to go back — the natural instinct is to panic or force harder. Both make things worse. Instead, 'difficulty brings good fortune' means: accept the difficulty. Stop struggling. In the stillness of being stuck, wisdom arrives. The ram, if it stops thrashing, can eventually work its horns free. The person who accepts their stalemate can see options invisible to the one still fighting.