Endurance
Aug 25, 2009
persevere (v) - to persist in anything undertaken; maintain a purpose in spite of difficulty, obstacles, or discouragement; continue steadfastly
strive (v) - to exert oneself vigorously; try hard; to make strenuous efforts toward any goal
exhaustion (n) - the state of being exhausted; extreme weakness or fatigue; the total consumption of something
anxiety (n) - distress or uneasiness of mind caused by fear of danger or misfortune; earnest but tense desire; eagerness; a state of apprehension and psychic tension occurring in some forms of mental disorder