KPI - Key Performance Indicator.
If you've been in the work world for any amount of time, you've seen that phrase or something similar. It is a measurement of some sort of success - whatever you definition.
I've got a new one for you - the Say-to-Do Ratio (I thought of calling it the STD ratio, but realized that would not be appropriate for obvious reasons).
This is the ratio of times you actually do the thing you say you are going to do. When you say "I'll give you a call tonight", do you call? If you tell someone you'll have the information sent to them by Friday, is it sent? It is actually an easy thing to measure.
I realize I'm not that great at it. At least, not as good as I want to be. I'm confident I am not alone in that regard.
The reason this ratio is so important is that it is a key factor in trust. When your say-to-do ratio is high, people trust you and know the expectations will be met. When your say-to-do ratio is low, it hurts relationships, hurts trust, and gives other people more work (like reminding you).
Be realistic, too. Having a ratio of 1:1, while desirable, probably isn't possible. We are all going to miss things. The goal is to make that ratio as close to 1:1 as possible.
Consider putting that on your goals for the year!