Hello Dutchman, Just a thought, have you considered contacting your local AGE UK if you are old enough. I am 61, and have a befriender visit me once a week, and also they ring me every week for a chat and update. It is not related to any illness whatsoever.
After I lost my husband, I attended groups related to his illness and carers, and do you know what, it made me worse. Everything revolved around that, and there was no escape.
The AGE UK let you talk about things if you want to, otherwise they find common interests, hobbies etc., and they also have community groups you can join local to you. It is something different to occupy your mind for a little while.
I wish I lived near to you, and could be of more help.
Even if you are not old enough, they will signpost you to the suitable groups for your age.
Wishing you strength, warmest wishes to you.