It is rare for people begin learning a language for no reason, especially considering how difficult it is. Often there is a specific catalyst for doing so, whether it be a job, a lover, or even something as simple as a movie. All these things can inspire individuals to take it upon themselves to learn a language different from their own. It is helpful to keep these things visible to the learner, as it can motivate them to continue learning when they've reached a slump.
These visual cues can offer people incentives to keep working until they are able to fulfil their goals. Motivation is just as important as effort, the lack of which renders all the energy and time exerted into learning a language fruitless. As with anything, it is easy to feel discouraged when the reward for hard work isn't immediately obtained. But the mere act of catching a glimpse of those rewards reminds people why they are doing what they are doing in the first place. This boost in motivation will make any language learner more willing to work hard to achieve fluency.