Persevere

[Sarah]

To persist in any business or enterprise undertaken; to pursuesteadily any project or course begun; to maintain a purpose in spiteof counter influences, opposition, or discouragement; not to give orabandon what is undertaken.Thrice happy, if they know Their happiness, and persevere upright.Milton.

[Sarah]

to continue steadfastly despite obstacles or discouragemnet;persist,endure

[Sarah]

to keep going at a steady pace despite all obstacles and things that try to put you down in the dumps;tolerance,endurance

[Cami]

to try to do or continue doing something in a determined way, despite having problems:

[Julian]

Continue in a course of action even in the face of difficulty or with little or no prospect of success.