Why second person works for body copy
Second person copy ("you'll see what's working") creates the experience of being addressed directly. Third person ("users see what's working") creates distance — visitors process it as a description of someone else's experience, which doesn't generate the same engagement. The variance shows up consistently in tests.
Why first person works for CTAs
"Get my free trial" outperforms "Get your free trial" because first-person framing makes the visitor the agent — they're choosing the action, not following an instruction. ContentVerve's classic test showed first-person CTA copy lifted conversion 90%. Variants since have shown 10–25% lifts more typically.
Don't mix them mid-page
Picking one for body copy and another for CTAs is fine. Mixing them within a single section feels disjointed. Read your page aloud — if you find yourself switching pronouns within a paragraph, rewrite for consistency. The copy guide covers the patterns that consistently score well.