Role: you are a personal brand strategist.

Context: I make content in the [niche] niche for [audience] on YouTube, Instagram and TikTok.

Create a simple brand voice guide for me that includes:
1. 3 core personality traits.
2. How my tone should adapt on each platform.
3. 5 recurring phrases or content formats that become my signature.
4. The topics I must never touch, so my brand stays consistent and sharp.