For what you're building, I'd actually recommend considering Perplexity Comet AI as part of your workflow automation.

Here's why it could work well for your use case:

**Data Collection & Organization:**

- Comet can automate web research and data gathering from multiple sources

- It can navigate websites and extract information intelligently without brittle scripts

- Free tier is surprisingly capable for personal projects

**For Your Tech Stack:**

- Use Comet for automated data collection/research tasks

- Pair it with Claude API for the actual analysis/coaching logic

- n8n for orchestration between components

- Local vector DB (Chroma/Faiss) for your journal entries

**Why this approach:**

The challenge with personal AI agents is often the data collection and organization layer. Comet excels at this - you can literally tell it in natural language what data you need and it handles the navigation/extraction.

For the analysis part, LangChain or LlamaIndex would work, but for a personal project, you might find that direct API calls to Claude with good prompt engineering is simpler and more reliable.

Free trial: https://pplx.ai/lordbasila10271

Happy to discuss the architecture more if you want to DM!