Simple logic tells us that if Christian psychology [1] has anything of value to offer, then the biblical claim of sufficiency is false; and in reliance upon the Bible alone the church has failed to meet the spiritual and emotional needs of Christians for the last 1900s years. Christian psychology [1] claims that the Bible lacks insights which have lately been provided by atheistic humanists coming to the rescue.
Links:
[1] https://www.thebereancall.org/taxonomy/term/56/psychology