Όταν έχω σταθερό πρόγραμμα, πετυχαίνω πιο εύκολα τον στόχο μου.

Όταν means when or whenever.

In this sentence, it introduces a time clause:

• Όταν έχω σταθερό πρόγραμμα = When/Whenever I have a steady schedule

Because the whole sentence expresses a general situation, όταν is very natural here.

Greek often uses the present tense for general truths, habits, or repeated situations.

So:

• Όταν έχω... πετυχαίνω...
  literally: When I have..., I achieve...

This is similar to English sentences like:

• When I study regularly, I do better.
• When I sleep well, I feel better.

It does not have to mean only right now. It can mean in general.

Έχω is the 1st person singular present of έχω = to have.

So:

• έχω = I have

In the sentence:

• Όταν έχω σταθερό πρόγραμμα = When I have a steady schedule

Because πρόγραμμα is a neuter singular noun.

The adjective must agree with the noun in gender, number, and case:

• σταθερός = masculine
• σταθερή = feminine
• σταθερό = neuter

So:

• σταθερό πρόγραμμα = a steady / fixed schedule

Greek does not use an indefinite article the way English uses a/an.

So English:

• a steady schedule

can simply be Greek:

• σταθερό πρόγραμμα

Sometimes Greek can use ένας / μία / ένα, but it is not required in a sentence like this.

Here πρόγραμμα means something like:

• schedule
• routine
• program
• structured plan

In this sentence, σταθερό πρόγραμμα most naturally means a steady/regular schedule or routine.

So it suggests consistency in daily life, not necessarily a computer program or TV program.

πιο εύκολα means more easily.

Breakdown:

• εύκολα = easily
• πιο = more

So:

• πετυχαίνω πιο εύκολα = I achieve [it] more easily

This is the comparative form of the adverb.

Yes. Both are correct.

• πιο εύκολα = more easily
• ευκολότερα = more easily

Greek often allows two comparative patterns:

1. πιο + adverb/adjective
2. a synthetic comparative form like -ότερα

In everyday speech, πιο εύκολα is very common and natural.

Because στόχο is the direct object of πετυχαίνω.

• πετυχαίνω = I achieve / reach
• What do I achieve? τον στόχο μου = my goal

Since it is a masculine singular direct object, Greek uses the accusative form:

• ο στόχος = the goal (subject form / nominative)
• τον στόχο = the goal (object form / accusative)

And:

• μου = my

So:

• τον στόχο μου = my goal

In Greek, possessive pronouns like μου, σου, του, της usually come after the noun.

So:

• ο στόχος μου = my goal
• το βιβλίο μου = my book
• η φίλη μου = my friend

That is the normal Greek pattern.

It has not really “lost” the accent pattern randomly; it has changed form because the noun is in a different case.

The basic form is:

• ο στόχος = the goal

But as a direct object, it becomes:

• τον στόχο

This is a normal masculine noun pattern in Greek:

• ο δρόμος → τον δρόμο
• ο άνθρωπος → τον άνθρωπο
• ο στόχος → τον στόχο

Πετυχαίνω can mean several related things, depending on context:

• achieve
• succeed in reaching
• hit
• manage to attain

In this sentence, it means:

• I achieve / reach my goal

So πετυχαίνω τον στόχο μου is a very natural phrase for I achieve my goal.

Greek word order is fairly flexible, although the original sentence is very natural:

• Όταν έχω σταθερό πρόγραμμα, πετυχαίνω πιο εύκολα τον στόχο μου.

You could also hear variations like:

• Πετυχαίνω πιο εύκολα τον στόχο μου όταν έχω σταθερό πρόγραμμα.

The meaning stays basically the same, but the emphasis changes slightly.

The version with Όταν... first is very common because it sets up the condition or time frame before the main idea.

Because the sentence begins with a subordinate clause:

• Όταν έχω σταθερό πρόγραμμα = dependent clause
• πετυχαίνω πιο εύκολα τον στόχο μου = main clause

Greek normally separates these with a comma, just as English often does:

• When I have a steady schedule, I achieve my goal more easily.

It can feel like either, depending on context.

In this sentence, because it expresses a repeated/general pattern, English whenever fits the idea well:

• Whenever I have a steady schedule, I achieve my goal more easily.

But when is also completely fine:

• When I have a steady schedule, I achieve my goal more easily.

So Greek όταν comfortably covers both kinds of meaning here.