The weakest link in most goal systems is ourselves. Changing behavior is incredibly difficult because we get sidetracked, forget, and rationalize our failures. A good system should not rely on our memory or willpower to keep our goal top-of-mind.
So putting it up on Trello is a good idea, as is any other way to ensure your system stays in focus, especially for the first 45-60 days. I built an app for that purpose. It makes it easy to consistently do the small things that lead to results (reviewing your goal; assessing your progress; tracking habits; doing deep work; brainstorming), by reminding you via a browser extension. Check out Focal Point (focal.pt).