An important part of counseling at any level, for whatever the need may be, is trust. Often, what builds trust is when we know a person identifies with our situation and knows what we're going through.
Peer counseling in self-help groups, even with Christian fellowship, can be reassuring because of shared experiences in life.
In matters of faith, we also need to have similar assurances. This is an important reason for Jesus, God's Son, becoming human to live among us.