Humanistic approach is unrealistic
An overly idealised and unrealistic view of human nature
Humans arguably aren't as "good" and "growth oriented" as the humanistic theory suggests, the approach does not recognise people's capacity for pessimism and self-destructive behaviour
The idea human personality & development is directed only by an innate drive for growth is simplistic as is saying all problems arise from blocked self-actualisation
Approach may not be appropriate or realistic in modern society