Looks like you already started
... But in all seriousness, I'm disappointingly guilty'a the same. Never finished the first playthrough of my first Fire Emblem game; Blazing Sword; due to a combination of another game I sorely wanted gettin' into my hands, and PC problems deletin' the save file after a year I'd forgotten 'bout it.
It's hard to not get annoyed when I have to restart levels multiple times because a unit dies. I realize that it's a neat mechanic, but I can't stand losing units, so if one dies I have to restart. I'm happy that Awakening has the option to turn that off.
I find it too annoying personally.