Experience with aPM+
anger, anxiety
COLD
When asked about their overall experience with aPM+, nearly all participants described their participation as positive and mentioned specific strategies they found particularly useful (Supplementary Table 
Another positively mentioned strategy was strengthening 
I have learned something else here! About social support/ About being in contact with others. Before, I always hid from others/ or when my friends called me, I told them ‘I don’t have time’ or just ‘I can’t’. Somehow, I just tried to hide and didn’t want to see anybody or to go out with them. However, since I have been here [Note: participated in aPM+], I’ve learned that I need to have contact with others. And now, if others call me/ or I call them and I visit them/ or they come to me, or we go out together. I have much more contact with others now. (P81, f, 56)
Learning about the 
Of course, if you stay home and sleep/ if you lie in bed/ you don’t get out and if you don’t have contact with others, it makes you sick, yes. That was very helpful/ I learned here that when you sit all day at home/ if you don’t leave the flat/ if you don’t do anything, you are probably getting sick/ So, now I go out/ I go for a walk in the park and things like that/ I do that a lot, yes. (P64, m, 59)
The newly developed sixth session was greatly appreciated by the participants. Those who chose to 
Some participants mentioned that they use various strategies they have learned in aPM+:
Last time, I used this strategy/how do you call it/ the strategy to calm me down when I am angry, the one that helps me to control my anger. For example, I need to focus on the feeling that is right there and feel my body/ and if my fist is clenched, I need to consciously release it. I also learned that it helps me to leave the situation/ just to go to another place. That helped me a lot, especially in some discussions (laughing)/ and also drinking a glass of cold water and slowly breathing in and out. (P42, f, 37)
Many participants described the 
I had the chance to talk with her about everything. Even about stuff I couldn’t talk about with others. I have many friends/ many friends, but I couldn’t talk with them about my personal problems. Here [note: aPM + training], I talked about everything that was in my heart. I took everything out of my heart. (P18, m, 25)
Some participants mentioned that the aPM + trainer suggested something or supported them in ways that were not explicitly described in the original manual but may have been applied intuitively, since all aPM + trainers were experienced clinical psychologists. Therefore, we developed the theme 
After attending the final aPM + session, 15 participants indicated that they continued with the 
Although most of the participants shared positive experiences, some reported challenges during their participation of aPM+. Several described difficulties with 
Some participants had 
P: Nothing helped against my anxiety/ I suffer from anxiety/ I was afraid, but it [note: aPM + training] was not helpful.
I: It didn’t help you to deal better with your anxiety?
P: No. (P86, m, 26)In view of the special situation in which participants were living, some saw themselves as faced with 