Background: Mental illness continues to be a major health problem in Sweden and the number of sick leave for reactions to severe stress, such as fatigue syndrome, increased most between 2010 and 2015. The World Health Organization (WHO) warns that health care is globally not equipped for the increasing number people with mental illness. The fatigue is a reaction when the brain is stressed by prolonged stress without the possibility to recover. The recovery process means regaining control and focusing on lifestyle changes with the goal of gradually returning to a functioning life. Clear and evidence-based guidelines are lacking and the uncertainty about which treatment method is the most effective illustrates the need for research on how to treat stress-related diseases. Purpose: To highlight experiences of recovery factors in people diagnosed with fatigue syndrome. Method: Qualitative empirical interview study with eleven informants. The material has been analyzed according to Berg's analysis method for qualitative research. Results: The informants had gotten sick of too much stress and knowing the limit of their own vulnerability was the core of the recovery process. The theme that became apparent was: the importance of understanding your own vulnerability and the following categories emerged: the need for environmental support, importance of acceptance, feeling permissiveness and reassessing yourself. Conclusion: The condition for recovery from fatigue syndrome was to understand and accept the disease. Knowing the limit for your vulnerability and being content with the person that the change process resulted in, was the essence of the recovery process.