What to call the attitude of pursuing something
What will you call a person with an endless spirit of pursuing something?
Determined/resolute person:
Determination, resolution:
- Firmness of purpose; resolve: approached the task with determination and energy.
- A fixed intention or resolution: returned to school with a determination to finish.
also unyielding or tenacious :
- Not bending; inflexible
- Not giving way to pressure or persuasion; obdurate.
Source: www.thefreedictionary.com
The word Doggedness comes to my mind.
In some situations single-mindedly would also be useful.