Use simple checks, like verifying a file exists before moving it or ensuring a calendar event still belongs to you. Introduce short delays to let APIs settle. When an error occurs, notify yourself with clear context and a one-click button to retry safely.
Create idempotent behavior by checking unique identifiers before taking action. Store recent hashes or message IDs in a small table. If the same payload arrives again, exit gracefully and log the attempt. Your future self will thank you for the quiet stability.