There's always a concern whenever we set any limit. There are significant individual differences. It could be that sometimes after the trial we might deal with normal issues but also with adjustment-related issues that might resolve in about two or three months. Sometimes it could be the onset of panic attacks. If I do not know how to deal with my panic attacks, I might start feeling demoralized. I might start avoiding going to places or returning to my work.
On February 1st, 2018. See this statement in context.