The Stoics treated philosophy as training rather than doctrine - something closer to what an athlete does than what a scholar knows. Knowing the arguments is the easy part and, on their view, worth very little on its own. The question is whether the principles are available to you at the moment something goes wrong. Hence the exercises: the evening review of the day's conduct, the rehearsal of principles until they are ready to hand, the willingness to attempt what you expect to be bad at.
— Marcus Aurelius, The Meditations 1.07"From Rusticus: to get an impression of need for reform and treatment of character; not to run off into zeal for rhetoric, writing on speculative themes, discoursing on edifying texts, exhibiting in fanciful colours the ascetic or the philanthropist."
— Epictetus, The Enchiridion 46"On no occasion call yourself a philosopher, and do not, for the most part, talk among laymen about your philosophic principles, but do what follows from your principles."
— Seneca, Moral Letters to Lucilius 38"Of course we must sometimes also make use of these harangues, if I may so call them, when a doubting member needs to be spurred on; but when the aim is to make a man learn, and not merely to make him wish to learn, we must have recourse to the low-toned words of conversation."
— Epictetus, Discourses 1.15"Is then the fruit of a fig-tree not perfected suddenly and in one hour, and would you possess the fruit of a man’s mind in so short a time and so easily?"
— Marcus Aurelius, The Meditations 11.29"This is much more true of living."
— Marcus Aurelius, The Meditations 12.06"Practise even the things which you despair of achieving."
— Marcus Aurelius, The Meditations 5.09"Don't be disgusted, don't give up, don't be impatient if you do not carry out entirely conduct based in every detail upon right principles; but after a fall return again, and rejoice if most of your actions are worthier of human character."
— Marcus Aurelius, The Meditations 7.02"And with you it lies to rekindle them constantly."
— Epictetus, Discourses 3.8"As we exercise ourselves against sophistical questions, so we ought to exercise ourselves daily against appearances; for these appearances also propose questions to us."
— Epictetus, The Enchiridion 52"But we do the opposite; for we spend our time in the third division, and all our zeal is devoted to it, while we utterly neglect the first."
Nobody in these texts claims to have arrived. The Stoics had a term for the person making progress, the prokopton, and were clear that the perfected sage was a standard rather than an acquaintance. Marcus is writing notes to himself about failing at the same things repeatedly, which is what makes the Meditations useful rather than merely admirable. That is the most transferable thing in the tradition: the assumption is not that you will get this right, but that you will keep returning to it, and that returning is the practice.