The hardest thing about being a writer can vary widely from person to person, but some common challenges include:

1. Writer’s Block: Struggling to find inspiration or the right words can be a major hurdle.
2. Self-Doubt: Many writers grapple with self-doubt and fear that their work isn’t good enough.
3. Discipline and Consistency: Writing regularly requires discipline, which can be difficult to maintain over long periods.
4. Criticism and Rejection: Handling criticism and rejection from publishers, editors, or readers can be tough emotionally.
5. Balancing Creativity and Market Demands: Finding a balance between staying true to one’s artistic vision and producing commercially viable work can be challenging.
6. Financial Stability: Many writers struggle with achieving financial stability, especially when starting out.
7. Isolation: Writing is often a solitary activity, which can lead to feelings of isolation or loneliness.

Each writer’s experience is unique, so the hardest aspect can depend on individual circumstances and personality.