I think a bigger predictor of if someone will achieve a goal or not is based on their ability to see things as they are, not their ability to envision a brighter future. Envisioning can be the easy part. It gets the juices flowing and creates motivation.
However the trickier part is honestly assessing the current state of affairs. It’s only through understanding how things are showing up for you, right now in the moment, that you can know what first steps are required to make progress toward the brighter future state. It’s through the polarity created in comparing today vs tomorrow that change can manifest, not unlike the current flowing through a circuit.