The Torah is so particular that we do not destroy or waste that which G-d has given us in this world. This is not just a quality which our grandmothers lived by, but it is a Jewish way of life. Yet, the High Priest on Yom Kippur every year would dispose of the garments he wore into the Holy of Holies and they would be buried in the ground. This practice requires explanation as it is in contrary to the general sensitivity Torah has towards clothing, food, etc. Herewith lies an important lesson about personal growth.