The three things we all forget
1. We’re not our audience
Check that appeal/letter/message before you send it. Is it focused on you or your audience? The correct approach: focus on, respect and engage the audience first.
2. Our audience doesn’t think like us
Check how you make your organization/services/information accessible to people. Is it presented to match your org chart or the mindframe of your audience? Correct approach: you guessed it, the latter.
3. Our audience doesn’t take action without guidance
Check every communication with your audience. Does it make it clear what you’re asking them to do and why? Is your “ask” unmistakable? Make sure it is.

Katya,
You’re right on target here. Thanks for such a succinct reminder to us all.
I can safely say that maintaining the perspective of “we are NOT our audience,” then getting that audience input/perspective, is the single most important step in nonprofit marketing success.
And yes, once you know ‘em, be clear and direct in your call to action.
Go, girl, go.