Με μία γουλιά νερό και λίγη ησυχία νιώθω αμέσως καλύτερα.

Here με means with.

So Με μία γουλιά νερό και λίγη ησυχία... means something like With one sip of water and a little quiet...

A useful point:

• με is followed by the accusative case
• that is why you get forms like μία γουλιά and λίγη ησυχία

Because γουλιά is a feminine noun.

In Greek, adjectives and words like one must agree with the noun in gender, number, and case.

So:

• ένας = masculine
• μία / μια = feminine
• ένα = neuter

Since γουλιά is feminine, you say:

• μία γουλιά = one sip

Greek often leaves out the article with substances or general quantities, just like English can.

So:

• μία γουλιά νερό = a sip of water

This is very natural Greek. You could sometimes hear other structures in different contexts, but here νερό without an article is exactly what you would expect.

Γουλιά means sip or mouthful, especially of a drink.

So:

• μία γουλιά νερό = a sip of water

It is a very common everyday word.

Because ησυχία is also a feminine noun, and λίγη agrees with it.

• λίγος = masculine
• λίγη = feminine
• λίγο = neuter

So:

• λίγη ησυχία = a little quiet / a bit of peace and quiet

Also, after με, Greek uses the accusative, and for many feminine nouns like ησυχία, the accusative singular looks the same as the nominative.

It connects both ideas to με.

So the structure is:

• με [μία γουλιά νερό] και [λίγη ησυχία]

In other words, the speaker feels better with a sip of water and a little quiet.

Greek often uses one preposition with the first item and lets it apply to the second item too.

Νιώθω means I feel.

It is:

• 1st person singular
• present tense

So:

• νιώθω = I feel
• νιώθεις = you feel
• νιώθει = he/she/it feels

In this sentence, the subject I is not stated separately, because the verb ending already tells you that.

Αμέσως means immediately / right away, and it modifies the whole idea of feeling better.

So:

• νιώθω αμέσως καλύτερα = I feel better immediately

Greek word order is fairly flexible, but this placement is very natural. It emphasizes that the improvement happens right away.

Because here καλύτερα functions like an adverbial/predicative comparative, meaning better, not better one or better person/thing.

After verbs like νιώθω (I feel), Greek commonly uses:

• καλά = well
• καλύτερα = better

So:

• Νιώθω καλά = I feel well
• Νιώθω καλύτερα = I feel better

This is one of the most common ways to say I feel better in Greek.

Yes, that is a very natural way to understand it.

The sentence suggests that these small things are enough to help:

• a sip of water
• a little peace and quiet

So the tone is something like:

• A sip of water and a little quiet are enough to make me feel better right away.

Yes, in everyday Greek they are the same word: one / a for feminine nouns.

You will see both:

• μία
• μια

The version with the accent written explicitly, μία, can help show the stress clearly, especially in more careful writing. In everyday writing, μια is also extremely common.

So both are fine:

• μία γουλιά
• μια γουλιά

It can mean more than literal silence.

Depending on context, ησυχία can mean:

• quiet
• peace and quiet
• calm
• freedom from noise or disturbance

In this sentence, λίγη ησυχία probably means a little peace and quiet, not necessarily complete silence.

A natural English rendering would be something like:

• With a sip of water and a little peace and quiet, I immediately feel better.
• A sip of water and a little quiet make me feel better right away.
• With some water and a bit of quiet, I feel better immediately.

The exact English wording can vary, but the Greek structure is very straightforward:

• Με... = With...
• νιώθω = I feel
• αμέσως καλύτερα = better immediately / right away