The Baptism of the Lord is referred often to as another Epiphany. Jesus is identified by His Father as the beloved Son of God. It is a sign for Jesus to begin his journey to the Cross. After Jesus will die the waters of baptism will not only wash our sins but will also give us the new life in the Holy Spirit.
Do you know where you were baptised? Who were your godparents? Perhaps you still have your baptismal candle, or the original certificate?