To Eulogize or Essay

My dad is dying. Because of this, I've been writing notes and snippets for his eulogy. It's the first eulogy I've ever tried to write, but I've already discovered that it's such an odd (or maybe 'specific' is more apt) mix of biography and essay that I'm unable to figure out what should be included. Furthermore, I've never quite noticed that biographies themselves are basically just very long, extremely detailed essays. Maybe I'm a dumb.

I'm not a writer. This discovery is vexing....