On Wednesday, the Church celebrates with great joy and solemnity the Feast of the Dormition of the Blessed Virgin Mary (also known as the Feast of the Assumption).
In preparation for this grand feast, the Church prescribes the discipline of fasting for her faithful. Among Eastern Christians, this fast has been in effect since the beginning of the month. Among Western Christians, the fast is on Tuesday and consists of both a fast (one full meal that day) plus abstinence (no flesh meat).
Fasting, of course, should always be accompanied by prayer and meditation. To aid your meditation for the feast, I commend to you three sermons on the Dormition by St John of Damascus. For your convenience, they may be accessed here.
NOTE: The photo is of the final home and shrine of the Blessed Virgin Mary near Ephesus, Turkey.