The teacher is resigning from their position at the elementary school due to declining health issues over the past few months that have made it difficult to fully perform job responsibilities. While it is with sadness to leave such a respected institution where they have enjoyed teaching students in a good environment since 2012, the teacher's family and doctor advise taking a full-time rest for health reasons. The teacher expresses gratitude to the employer and colleagues for their support and friendship during employment at the school.