What is real progress in terms of Stoicism?
Epictetus resoundingly explains.
Stoicism is about living according to Nature where virtue is the sole good.
He says, "Now, if virtue promises to enable us to achieve happiness, freedom from passion, and serenity, then progress towards virtue is surely also progress towards each of these states" (p. 11).
Therefore, if you want to make progress in becoming Stoic, you would not show a sage all the books you've read on the subject of Stoicism. Rather, you would show them how you are living according to nature and focusing solely on virtue. Epictetus likens this to an athlete.
What are the hallmarks of progress in Stoicism?
"So where is progress to be found? If any of you turns away from external things to concentrate his efforts on his own power of choice, to cultivate it and perfect it, so as to bring it into harmony with nature, raising it up and rendering it free, unhindered, unobstructed, trustworthy, and self-respecting ... and if, when he gets up in the morning, he holds in mind what he has learned and keeps true to it ... this, then, is the person who is truly making progress; this is the person who hasn't traveled in vain! (p. 12).
"what is truly worthwhile is to study how to rid one's life of distress and lamentation, and cries of 'Ah, what sorrows are mine!' and 'Poor wretch that I am!', and of misfortune and adversity; and to learn what death, banishment, prison and hemlock really are, so that one may be able to say in prison like Socrates, 'My dear Crito, if it pleases the gods that this should come about, so be it!'" (p. 12)
And when you read tragic books, the purpose should be to learn "the sufferings of men who have attached high value to external things." (p. 13)
Epictetus makes that point that we ought to praise God, "who discovered, and brought to light and communicated to all, the truth that enables us not merely to keep alive, but to live a good life" and for whom we ought to thank "for this benefaction" and for "such a wonderful fruit in the human mind" (p. 13).
In summary, we ought to:
Renounce externals (desiring something that is out of your control, or avoiding something painful that is out of your control).
Focus on our character; cultivate it, perfect it.
Make our character honest, trustworthy, free.
Expunge from our life the following: sighs, sorrow, grief, disappointment and exclamations like, "poor me!"
Learn what death is; face it; realize it is your fate.
Be grateful to God or the Gods for having given us the ability to live and live well.
If you can do these things, then you are showing progress in becoming Stoic.