He shall spare the poor and needy, and shall save the souls of the needy. Some have come to me with overwhelming problems, that I didn't know on which end to start. Don't waste time trying to figure out where these problems come from, rather direct your help to restore the individual. Followers of Jesus Christ should be His witness, which includes helping others to overcome sin, sinful lifestyles and satan.
Many believers feel inadequate and therefore are paralyzed to help at all.
One does not need to be a professional in order to help a fellow believer, or bring a sinner to Christ. Make sure you are spiritually equipped, living holy before Him. Jesus never went into much detail about sin issues, for he knew the origin and author. It is not important how sexual deviation, alcoholism, child abuse, violence, anger, emotional problems etc. did develop and come about, but more as for how to get rid of it and to be delivered from. The danger is of spending too much time and effort on that which must be conquered, than on HOW to conquer it.