Great Lent is not a season of morbidity and gloominess. On the contrary, it is a time of joyfulness and purification. We are called to “anoint our faces” and to “cleanse our bodies as we cleanse our souls.” The very first hymns of the very first service of Great Lent set the proper tone of the season:
Let us begin the lenten time with delight ... let us fast from passions as we fast from food, taking pleasure in the good words of the Spirit, that we may be granted to see the holy passion of Christ our God and his holy Pascha, spiritually rejoicing.
Source: https://oca.org/orthodoxy/the-orthodox-faith/worship/the-church-year/great-lent
