Just like the Samaritan woman in order to understand forgiveness, grace, and salvation in Christ you have to; recognize your need for cleansing, and ask to receive living water. Find time to get alone with Jesus and find out who He is. Sometimes it’s a matter of getting over your unbelief, and ask Lord to give you a right attitude, and a new heart.
Ask Him and He will give you living water. Have faith in Him and believe His grace is big enough.