Hobbies
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A common, fun question is what to do outside or do that involves distance vision everyday for vision gains[1]. When a job (or training, school, etc.) doesn't provide enough distance vision, the answer is usually a hobby. This way, you focus on the process more than the results or time it takes and enjoy it, all in one.
It's better to choose something that you already (would) do or enjoy and works with your schedule and budget, in order to create long-lasting changes. It should answer more deeply why you want 20/20 vision in the first place.
The hobby or hobbies should be done using your normalized glasses.
Amount of Time
A rule of thumb is to spend at least 1 hour each day, ideally more (as much as you can) to offset eye strain, on distance-vision tasks (outdoors, or indoors and non-close-up). See the 3 hour rule.
The reason is, axial length reductions from myopic defocus generally take at least 40 minutes to become statistically significant (-8±9 μm), then the rate of change seems to increase incrementally afterwards (-10±8 μm after 50 minutes), from a study of myopic and hyperopic defocus induced for 60 minutes [2]. Other studies (same article) suggest an average decrease of -7 µm from myopic defocus, suggesting some variation in individuals. The Delshad et al. notes a conversion ratio of axial length change of 10 μm for every 0.03 D change in ocular refraction, which provides a reference for expected progress.
Other Lifestyle Changes
There are other ways to incorporate vision improvement into everyday life, such as type of work, means of transportation [3], or vacation time.
In the future, if more awareness of the problems and solutions reaches public consciousness, technologies and environments could be designed to encourage exploration and engagement with the physical world instead of distraction from it, e.g., more seamless and natural information interfaces, or new forms of personal and sustainable transportation.