Jahoda suggested that there is a criteria that people must meet in order to be seen as psychologically healthy, and those who deviate from this criteria are at risk of mentalhealthproblems.
Jahoda's Criteria
positive self esteem and sense of identity
personal growth and self actualisation
autonomy
coping with stressful situations
accurate perception of reality
master of the environment: functioning at work, love, solve problems and have interpersonal relations