A Little Motivation from Henry Rollins

Tenacity (noun): the quality or fact of being able to grip something firmly; grip

• Synonyms: persistence, determination, perseverance, doggedness, strength of purpose, tirelessness, indefatigability, resolution, resoluteness, resolve,firmness, patience, purposefulness, staunchness, steadfastness, staying power, endurance, stamina, stubbornness, intransigence, obstinacy,obduracy, pertinacity