Seneca faces up to that most valuable of things, time and how to spend our precious moments, when facing into his own mortality.

Quid agam? mors me sequitur, fugit vita.

What should I do? Death follows me, while life flees.

Quid (what) is an interrogative pronoun.

Agam (should I do) is the first person singular present subjunctive form of "agere," used here in an indirect question to express the speaker’s uncertainty about their actions.

Mors (death) is a feminine noun with a declension consonant stem following the third declension. It is in the nominative singular form.

Me (me) is the first person pronoun used as the object of "sequitur."

Sequitur (follows) is a deponent verb in the third person singular present indicative form of "sequi." Note sequere is the gerund.

Vita (life) is in the nominative singular form.

Fugit (flees) is the third person singular present indicative form of "fugere."