Writing your own vows?

Lily • What goes around, comes around.

It’s been almost a year since we got engaged and we’ve decided to get married on the day we got engaged on- so I only have a couple days left and I want to write my own vows but I’m having trouble putting my thoughts and feelings on paper because there’s so much I want to say but I know it can’t be too long

Anyone else writing their own vows or have any advice?