I work in a company that has an easy hire easy fire approach. The rate at which people are fired is over 15% of the workforce each year. The worst part is that an explanation is not given for those that are fired: it is not known how well they were performing, why they were fired, etc. All those that get fired are easily in top 2% of the population in terms of intelligence.
All of this leads me to become paranoid of being fired, even though my performance is rated extremely highly. I love to work at the company and would hate to have to get another job if I was fired.
I don't have such anxiety in any other part of my life: this is directly related to the work environment and the company hiring/firing approach. It is a feeling shared by some of my colleagues so is not an idiosyncrasy of my psychology but seems to be caused by the environment. So I don't think this is a question of therapy but a specific
What strategies can I use to deal with this? Leaving is not an option since the work is too good and it is not likely there is another position that offers the same type of work (it is highly niche and brutally competitive in terms of massive supply/demand ratio). I just want to be able to enjoy the work without the stress of worrying about being fired all the time.