I'll note that you probably mean this in the original sense of Zeno's philosophy and not the modern use, which has more of a connotation of emotional repression. Somewhere along the way from ancient Greece "stoic" began to mistake the original's sense of not allowing yourself to be controlled by your emotions to something like not experiencing them to begin with. Though to be fair, even the original held that certain things like fear were not rational and fully developed stoics wouldn't experience it, and in general that emotional extremes were to be avoided.

In some ways it is very like Zen Buddhism in this sense of accepting things as they come without being rule by them. (The naming is only very coincidentally similar-- Zeno's stoicism and Zen)