I usually use the first person plural, in textbook/journal style, ie "we". You can pretend you're teaching a student sat next to you - eg if you're rubber ducki

I usually use the first person plural, in textbook/journal style, ie "we". You can pretend you're teaching a student sat next to you - eg if you're rubber ducking code. But even if I'm pair programming or in a review I'd probably revert to we rather than I. Also good practice for whiteboarding, giving presentations, basically any situation where you need to explain yourself to others.