As I become that person I want to be, I sometimes forget the goals I have made. One way I found to remember is to wear a ring shaped like a knot. Wearing a ring all day is a lot easier than wearing a string around my finger, but you might choose a certain watch or bracelet or even a rubber band or any other visual cue that will keep you on track.
I like the jewelry as my reminder because it is pretty and was also a reward for achieving another goal. My ring is silver. Maybe when I get to my ultimate goal, I'll get a platinum ring or a ring with a stone.