Assess your expectations
How quickly do you expect to advance in the belt system? How high do you expect to advance in the belt system? (The minimum time in rank requirements of your organization will affect the proceeding two questions) How hard are you willing to training?
Assess your time
How much time are you able to devote to training? How much time are you willing to devote to training? Due to family, work, health, or other considerations, at what points in time could you reasonably expect to ready for promotions.
Set goals that take your current status, abilities, expectations, and time into consideration. Do not set goals that exceed these considerations or you will fail to reach them.