Avoid Having Unstructured Conversations with AI

I never thought I'd be writing so much while using AI!
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I've written a substantial prompt to convert a list of time codes from my live streams into a CSV format, which can then be imported into a Premiere Pro sequence as markers.
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Recently, I've been avoiding freestyle conversations with AI because I feel like they become repetitive.
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Instead, I prefer to start every conversation with a pre-written prompt that I've written in Google Docs, which I can reuse.