How can you keep practicing when you cannot be sure you will ultimately attain spiritual fruition?

First examine why you want to practice and whether this path has brought actual changes. Practicing for a while cannot make you completely certain of ultimate spiritual fruition. But whether your temper has improved a little or you approach things more positively can gradually become visible in daily life.

This is also why spiritual practice can be difficult to sustain. After a long time, the final result can still feel intangible and unclear. Along the way there are tests involving fame, gain, and desire, or unresolved questions, and people can easily want to stop. Saying you will practice is indeed different from continuing to face these things throughout the journey.

So regularly remind yourself where you originally wanted to go. The depth of your motivation and great aspirations influences how much time and effort you are willing to invest. It is more than an interest you remember only when you have spare time. Positive changes in your character and life can also encourage continued learning.

This concerns taking your goal seriously, not using 'perseverance' to guarantee everyone's final result. Questions and tests remain part of what learning involves. Returning to your original intention helps you understand why the work before you is worth continuing.

I have compared the goal of spiritual fruition to a hundred-meter race or swimming, where reaching the finish is required for completion. I put it strongly then: if you strive for many years but finally give up, you still have not completed it. Yet in the same conversation I also said that if you cannot finish in one lifetime, you can continue for two or three, provided your direction and way of applying effort are correct. The comparison reminds us not to mistake partial progress for reaching the finish. You cannot isolate one sentence and claim that all previous learning and good deeds were meaningless.

Likewise, attending every day and earning perfect attendance do not guarantee spiritual fruition. What matters is whether, through tests, you develop more wisdom and judgment and truly understand. I am still working at my own practice and use continued recording of the program to keep myself accountable. I am not demanding that others move forward on the basis that I have already completed my cultivation.