As part of the study, we will record your psychosocial health with the help of standardised questionnaires at the beginning and at the end of your participation. This will be done in two telephone interviews, each of which will take 30 to 45 minutes. Whether My7steps App is a suitable offer for you and you can participate in the study will be determined in an introductory video interview, which will take place before you are admitted to the study and will also last about 45 minutes. In total, three appointments are necessary for participation in the study, each lasting about 45 minutes and spread over 3.5 months of study time: two appointments at the beginning and one appointment at the end of the study.