Σήμερα αντιμετωπίζω ένα δύσκολο πρόβλημα στη δουλειά, αλλά προσπαθώ να είμαι ήρεμος.

Both are present tense, first person singular: I face / am facing and I try / am trying.

In Greek, the present tense often covers both:

• a general present: I deal with
• an ongoing present: I am dealing with

So in this sentence, both verbs sound natural for what is happening today / right now.

Αντιμετωπίζω means I face, I am confronted with, or I deal with. It sounds more active than έχω.

So:

• Έχω ένα πρόβλημα = I have a problem
• Αντιμετωπίζω ένα πρόβλημα = I am facing / dealing with a problem

In this sentence, αντιμετωπίζω suggests the speaker is actively up against the problem, not just stating that it exists.

Greek often leaves out subject pronouns because the verb ending already shows who the subject is.

• αντιμετωπίζω = I face
• προσπαθώ = I try

So εγώ is unnecessary unless you want emphasis or contrast.

For example:

• Σήμερα αντιμετωπίζω... = neutral, natural
• Εγώ σήμερα αντιμετωπίζω... = I am the one facing this today, with extra emphasis

Because πρόβλημα is a neuter singular noun.

That means:

• the article is ένα
• the adjective must also be neuter singular: δύσκολο

So:

• ένα = a/an for a neuter noun
• δύσκολο = difficult, matching the neuter noun
• πρόβλημα = problem

Together: ένα δύσκολο πρόβλημα = a difficult problem

It is the direct object of αντιμετωπίζω, so it is in the accusative case.

However, neuter singular nouns often look the same in the nominative and accusative, so you do not see a form change here.

So grammatically it is accusative, even though the form is still πρόβλημα.

στη is the contracted form of σε + τη(ν).

So:

• σε = in, at, to
• τη(ν) = the, feminine singular article
• στη = in the / at the / to the

Since δουλειά is feminine, Greek uses στη δουλειά.

This phrase usually means:

• at work
• at the workplace
• sometimes in my job

Greek uses the definite article much more often than English.

So a phrase that is article-less in English may naturally take an article in Greek:

• at work → στη δουλειά
• at school → often στο σχολείο
• at home → στο σπίτι

So στη δουλειά is completely normal Greek, even though literal English would look like at the work.

Because Modern Greek does not normally use an infinitive the way English does.

English says:

• I try to be calm

Greek says:

• προσπαθώ να είμαι ήρεμος

The pattern is:

• προσπαθώ να + verb

Here:

• να introduces the following verb
• είμαι = I am / be

So να είμαι is the normal Greek way to express English to be in this kind of sentence.

Because after είμαι, Greek uses an adjective that describes the subject, and that adjective must agree with the person speaking.

Here the implied speaker is masculine singular, so:

• ήρεμος = calm, masculine singular

If you used ήρεμα, that would usually be an adverb meaning calmly, not calm.

So:

• είμαι ήρεμος = I am calm
• μιλάω ήρεμα = I speak calmly

Then the last word changes to ήρεμη.

So a female speaker would say:

Σήμερα αντιμετωπίζω ένα δύσκολο πρόβλημα στη δουλειά, αλλά προσπαθώ να είμαι ήρεμη.

That is because adjectives in Greek must agree with the speaker’s gender:

• masculine: ήρεμος
• feminine: ήρεμη
• neuter: ήρεμο

Yes. Greek word order is more flexible than English word order.

This sentence is natural as written: Σήμερα αντιμετωπίζω ένα δύσκολο πρόβλημα στη δουλειά, αλλά προσπαθώ να είμαι ήρεμος.

Putting Σήμερα first highlights today. That sounds very natural.

You could also change the order for different emphasis, for example:

• Αντιμετωπίζω σήμερα ένα δύσκολο πρόβλημα στη δουλειά...
• Προσπαθώ όμως να είμαι ήρεμος...

But the original version is a very good, standard way to say it.

The written accents show which syllable gets the stress:

• Σήμερα → SImera
• αντιμετωπίζω → antimetoPIzo
• δύσκολο → DIskolo
• πρόβλημα → PROvlima
• δουλειά → dhouliA
• αλλά → aLA
• προσπαθώ → prospaTHO
• είμαι → Ime
• ήρεμος → Iremos

A rough pronunciation guide for the whole sentence is:

SImera antimetoPIzo ena DIskolo PROvlima sti dhoulia, aLA prospaTHO na IME Iremos.

This is only approximate, but it helps show where the stress falls.