Photos and videos: open the item and choose Delete. It's kept for 30 days, then permanently removed.
Voice recordings: deleting one permanently removes the audio and transcript within minutes. It can't be recovered.
Your written answers: open them and edit or remove your text.
Something someone else shared about you, or anything you can't remove yourself: ask your family's owner or an admin, or contact us.
Want everything gone? See How do I delete my account?