Patience.

Patience (or forbearance) is the ability to endure difficult circumstances such as perseverance in the face of delay; tolerance of provocation without responding in annoyance/anger; or forbearance when under strain, especially when faced with longer-term difficulties. Patience is the level of endurance one can have before negativity. It is also used to refer to the character trait of being steadfast. Antonyms include hastiness and impetuousness.