Many use the S.M.A.R.T goal setting strategy. It's an acronym that stands for is the goal Simple? Is it Measurable? Is it Achievable? Is it Realistic? and is it Timely? So in this scenario you might say "I would like to build my Top 100 database from 49 to 55 people between October 1, 2021 and December 31, 2021". In this scenario, that goal meets all of the criteria of a S.M.A.R.T goal. It is real enough that you can get up every morning and track your progress.
In that goal statement, was a length of time that I feel is the best approach based on my research and experience. In my opinion, QUARTERLY goals are the best approach for one major reason: you increase the number of goal deadlines you have in any given year from 1 deadline to 4