A "goal setter" is someone who sets specific targets or objectives for themselves to achieve in order to make progress or succeed in a certain area. Full definition
The most powerful and prominent people in history are all widely regarded as great goal setters. (inc.com)
An early goal setter — Hope next year's much better — Coming here to enjoy time we spend! (sbnation.com)
In fact, every January the gym fills up with New - Year - New - Me goal setters looking to finally cut weight with a good helping of exercise. (dietselfhelp.com)