For most people, the Mild and Medium levels of practice are most important, due to the busy activities and duties of life.
With lots of time for Practice, but little Conviction:
It is very easy to think that the only way to progress is when you have retired from worldly life, such as a monk in a Himalayan cave may have done. This is simply not true. Such a person might have a great deal of time available, and know quite a few practices. However, with only mild conviction, little progress is made.
With little time for Practice, but lots of Conviction: