Yes, it can be good sometimes. But this is a personal thing, depending on the gambler's own characteristics. Some people prefer to cash out early and feel comfortable doing so. It depends on what makes you happy when gambling; it's not always the fear of losing everything, but something already established from the start.
I believe that patience is absolutely important in life, whether in play, at work, or in personal relationships. It's not just a question of when and how to cash in, it's a way of life.
Rushing and being impulsive leads to nothing but making mistake after mistake.