iccemayan mixcoyan monehuian tocomottitia toconmonamictia in atlauhtli.

Principal English Translation: 

with your own will and determination you spoiled or ruined yourself (metaphor) (see Molina)

Orthographic Variants: 
iccemayan mixcoyan moneuian tocomottitia toconmonamictia ynatlauhtli
Alonso de Molina: 

iccemayan mixcoyan moneuian tocomottitia toconmonamictia ynatlauhtli. de tu voluntad y con toda determinacion te echas a perder, metaphora.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 32r. col. 1. Thanks to Joe Campbell for providing the transcription.

themes: 
Metaphors, Proverbs, Riddles