Crafting Effective Prompts for ChatGPT
Lesson 4: Build and Test a Personal Prompt Library
Lesson Objectives
By the end of this lesson, students should be able to:
- Convert successful prompts into reusable templates with clear variables.
- Test a prompt on several different inputs before trusting it.
- Version and improve prompts based on what fails.
Lesson Content
A prompt that worked once is a lucky result. A prompt that works on five different inputs is a tool. This lesson turns your best prompts into a small, reliable library.
Step 1: Template it. Replace changing details with [variables]: [audience], [facts], [length]. Keep the fixed rules.
Step 2: Test it. Run the template on at least three different inputs, including one tricky case (missing information, unusual request, very long input). Note where it fails.
Step 3: Fix the failures. Add a rule for each failure: "If information is missing, ask me instead of guessing."
Step 4: Version it. Save the improved prompt as v2 with a one-line note about what changed. Keep the old version until the new one proves better.
Step 5: Store it where you work. A notes file, a document, a ChatGPT Project's instructions, or a Custom GPT for prompts you use daily (covered in the Mastering ChatGPT course).
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