Ben başarısız olmaktan korkuyorum, bu yüzden planlı çalışıyorum.

Yes—Turkish often drops subject pronouns because the verb ending already shows the subject.

• korkuyorum = I am afraid / I fear
• çalışıyorum = I am studying / working

So Ben is optional here. The sentence could simply be:

Başarısız olmaktan korkuyorum, bu yüzden planlı çalışıyorum.

Adding Ben gives a little extra emphasis, like As for me, I’m afraid of failing...

Başarısız means unsuccessful or a failure / failing depending on context.

In this sentence, it combines with olmak (to become / to be) to make:

• başarısız olmak = to fail, literally to become unsuccessful

This is a very common Turkish way of expressing ideas that English often puts into a single verb.

Because the verb korkmak normally takes the ablative case: -dan / -den / -tan / -ten, meaning from.

So:

• olmak = to be / to become
• olmaktan = from being / of becoming

That is why:

• başarısız olmaktan korkuyorum = literally I am afraid of being unsuccessful / afraid of failing

This pattern is very common:

• Yalnız kalmaktan korkuyorum. = I’m afraid of being alone.
• Hata yapmaktan korkuyor. = He/She is afraid of making mistakes.

That is just the normal Turkish pattern for this verb.

• bir şeyden korkmak = to be afraid of something

Examples:

• Köpekten korkuyorum. = I’m afraid of dogs / the dog.
• Karanlıktan korkuyor. = He/She is afraid of the dark.
• Başarısız olmaktan korkuyorum. = I’m afraid of failing.

For English speakers, it helps to memorize korkmak together with its case:

• not just korkmak
• but bir şeyden korkmak

Because of consonant harmony.

The ablative ending is basically:

• -dan / -den but after certain voiceless consonants, it changes to:
• -tan / -ten

Since olmak ends in k, a voiceless consonant, the ending becomes:

• olmak + dan → olmaktan

This is the same kind of change you see in many Turkish suffixes.

It breaks down like this:

• kork- = verb stem, fear
• -uyor = present continuous suffix
• -um = I

So:

• korkuyorum = I am fearing / I am afraid

In natural English, we usually translate it as I’m afraid rather than I’m fearing.

Turkish often uses the present continuous form (-iyor) in places where English might use either simple present or present continuous.

Here:

• korkuyorum = I’m afraid
• çalışıyorum = I study / I’m studying / I work / I’m working, depending on context

In this sentence, the speaker is describing a current state and a current habit/result:

• I’m afraid of failing, so I study in a planned/disciplined way.

Turkish -iyor is extremely common and often sounds natural even when English would not use am ... -ing.

Bu yüzden means because of this, for this reason, or more naturally so / therefore / that’s why.

In the sentence:

• Ben başarısız olmaktan korkuyorum, bu yüzden planlı çalışıyorum.
• I’m afraid of failing, so I study in a planned way.

It connects the first idea to the result in the second clause.

Similar expressions include:

• bu nedenle = for this reason
• onun için = therefore / so / that’s why

Yes, planlı is basically an adjective meaning planned, systematic, or organized.

But in Turkish, adjectives can often function like adverbs without changing form.

So:

• planlı çalışmak = to study/work in a planned, organized way

English often needs an adverb like systematically or a longer phrase like in a planned way, but Turkish can simply use the adjective before the verb.

Similar examples:

• hızlı konuşuyor = he/she speaks fast
• dikkatli çalışıyor = he/she works carefully
• düzenli yaşıyor = he/she lives regularly / in an orderly way

Yes. That is a very natural interpretation.

Depending on context, planlı çalışıyorum can mean:

• I study in an organized way
• I study systematically
• I work according to a plan
• I work in a disciplined way

So the exact English wording may vary, but the basic idea is that the person is not working randomly.

The word order is natural, but Turkish word order is flexible.

The sentence is:

• Ben başarısız olmaktan korkuyorum, bu yüzden planlı çalışıyorum.

A neutral structure is:

• [Subject] [what I’m afraid of] [verb], [linker] [manner] [verb]

You could move parts around for emphasis, for example:

• Başarısız olmaktan korkuyorum, bu yüzden ben planlı çalışıyorum.
• Bu yüzden planlı çalışıyorum; başarısız olmaktan korkuyorum.

But the original version is very natural and clear.

The comma separates two closely related clauses:

• Ben başarısız olmaktan korkuyorum
• bu yüzden planlı çalışıyorum

It helps show the pause before bu yüzden (so / therefore). In practice, punctuation can vary a bit, but the comma is perfectly normal here.

Yes, there are a few alternatives, though this one is very standard.

For example:

• Başarısız olmaktan korkarım.
  This sounds more like I fear failing / I tend to fear failing and may feel more general or formal.
• Başarısız olmaktan endişe ediyorum.
  = I’m worried about failing
• Başarısız olmaktan çekiniyorum.
  = I’m apprehensive about failing / I hesitate because of fear of failing

But korkuyorum is simple, common, and natural.

A very natural everyday version would be:

Başarısız olmaktan korkuyorum, bu yüzden planlı çalışıyorum.

That is probably how many speakers would say it unless they specifically want to emphasize I.

A rough guide for English speakers:

• başarısız ≈ ba-sha-ruh-suhz
• olmaktan ≈ ol-mak-tan
• korkuyorum ≈ kor-ku-yo-rum

A few useful notes:

• ş = sh
• ı is a vowel that does not exist in English; it is a dull, central vowel, somewhat like the unstressed vowel in taken, but not exactly
• ö and ü do not appear in this sentence, but they often matter elsewhere
• Turkish pronunciation is usually quite regular and follows spelling closely

A very literal translation is:

• Ben başarısız olmaktan korkuyorum.
• I am afraid from being unsuccessful.

But that is not natural English. A better natural translation is:

• I’m afraid of failing.

This is a good example of how Turkish and English organize the same idea differently.