According to a different source, this refers to the text "Overcoming Anxiety" by Jonas Kolker.
In this text, Jonas describes what it was like for him to experience anxiety. He talks about the difficulties it presented in his life, but also about the strategies that he used to overcome these. Jonas learned to control his thoughts through cognitive behavioural therapy. He was also able to gain control over his anxiety through meditation and mindfulness. Finally, he also benefitted from exposure, which involved facing his fears.
There are many ways in which we can apply this to our own lives. Everyone is anxious or fearful about different things, and while some people handle it better than others, everyone struggles from time to time. Therefore, we can all benefit from strategies such as therapy, mindfulness and exposure. Moreover, the strategies would be particularly useful to people who struggle significantly with anxiety.