Sometimes the truth hurts, but inevitably knowing the Truth will set you free, it will give you growth. Regarding salvation, it is life changing.
It takes great humility to admit your faults, especially your sins but taking them to your grave will lead to eternal damnation.
Understanding that we are all that thief on the cross, recognizing that in some cases takes great humility, but it is needed to all who want salvation from our broken sinful nature.
This message on the My New Life Podcast talks about the sinful nature of mankind and how we can ask to be saved once we recognize our sinful nature, having a desire to be with God.