I've been using this 3-prompt chain in ChatGPT and it works better than any planning method I've tried.

Prompt 1: Tell it to ask YOU questions. Where you're at, where you want to be. No advice yet.

Prompt 2: "What's the single highest-leverage thing I should focus on first? One thing. Tell me why."

Prompt 3: "Create a 30-day plan. One daily task. What to track. How to know if it's working."

Run all 3 in the same conversation.