Genre and place in the book. An extended "view from above" in time: whole epochs with their ordinary bustle — and "that life is now nowhere." Then a turn to the personal (recall acquaintances who chased vanities), and a practical coefficient: the measure of attention is set by the worth of the task.
Epochs as one. The long list of doings (marrying, sick, warring, flattering, craving consulships and thrones) under Vespasian — and all of it "οὐκέτι οὐδαμοῦ," nowhere; the same under Trajan. The succeeding "inscriptions of the times" (ἐπιγραφαὶ χρόνων) are like the epitaphs of whole eras. The EXERCISEview from above in its temporal mode (cf. Med. 8.31 — Augustus' court all dead; 6.47; 4.33 — the oblivion of names).
Resolution into the elements. πόσοι κατενταθέντες (having strained for an end) μετὰ μικρὸν ἔπεσον καὶ ἀνελύθησαν εἰς τὰ TERMστοιχεῖα — how many fell and were resolved into the elements. Death as return into the elements (cf. 04-05, 04-21); here the memory of death is in the service of the view from above.
Vanity versus one's own task. Above all — recall those you knew yourself: they chased empty things (κενά), abandoning to act "according to their own constitution" (κατὰ τὴν ἰδίαν κατασκευήν), failing to hold to it and be content with it. This is the antithesis of 04-30/04-31 (love and hold to your own, be content) → DOGMAself-sufficiency against the vanity of ambition (consulships, thrones — empty).
The measure of attention. The close is practical: "the attention (ἐπιστροφή) given to each act has its own worth (ἀξία) and proportion (συμμετρία)"; do not invest in a trifle more than is due — then you will not be discouraged (ἀποδυσπετήσεις). This is EXERCISEattention dosed by the importance of the task (cf. 04-24 — do the necessary, cut the superfluous). (ἀξία here is "the importance of a task," not the technical "value of an indifferent.")
The disciplines. The principal one is desire: the view from above relativises ambition (consulships, thrones) and the clinging to outcomes. The secondary is action: to hold to one's own task and to dose effort by importance.
Parallels. Whole epochs have passed — Med. 8.31; 6.47; 4.33 (cf. EXERCISEview-from-above). Resolution into the elements — 04-05; 04-21; Med. 8.18 (cf. TERMstoicheia). Vanity vs one's own task — 04-30; 04-31; 04-24 (cf. DOGMAvirtue-is-sufficient). The measure of attention by the task — 04-24 (cf. EXERCISEprosokhe).