The Samaritan woman met Jesus and Jesus didnt lecture her and make her jump through hoops to get to understand that Faith is all that is necessary to enter into heaven.
We like to think we have a saving grace - but - do we ? Yes and No ! We have it but its not in us ...its Jesus and His Righteousness extended and forwarded to our account.
We deal with shame in many ways - mostly we forget about it - but it often comes back at us. God uses all things to draw us to Him, including shame - our screwups, our sin, our evil...
We are overwhelmed in life and find that its too hard to go on sometimes. Yet there is hope ! Life is in some ways a puzzle to solve. Once its solved your life is resolved.