10 Common Claude Mistakes and How to Avoid Them

After months observing users work with Claude, the same mistakes repeat. Here are the 10 most common, with concrete fixes.

1. Vague prompts

Fix: give specific context (role, goal, constraints) at start.

2. Not giving Claude a role

Fix: "Act as [specific role with X years experience in Y]".

3. Asking for answer in one shot

Fix: request explicit chain-of-thought.

4. Ignoring context

Fix: keep it focused; use /clear when changing topic.

5. Accepting first response

Fix: iterate.

6. Not using structured format

Fix: explicitly request format (table, bullets, JSON).

7. Trusting numbers and sources without verifying

Fix: ask "what's your source" and verify.

8. Contaminated context

Fix: /clear between big distinct tasks.

9. Wrong model

Fix: match model to task.

10. Not asking for "I don't know"

Fix: prompt "if uncertain, say so. Don't invent."

Conclusion

Most problems with Claude aren't model limitations, they're communication failures. Correcting these 10 dramatically improves your daily experience.