1. Aku = Saya

 If you want to write AKU, then use AKU in all sentences.

 If you want to write SAYA, then use SAYA in all sentences.

 Dont mix them.

 But AKU is suitable to use in this case as SAYA is a polite form.

2. mu = your 

 Thus, your way = jalanmu

3. ku = my

 Thus, my pride = keangkuhanku

4. KEANGKUHAN is better to used.

 Keangkuhan = the negative type of pride

 Kebanggaan = the positive type of pride

5. YANG is added mostly in Malay sentence. You sholud know how to use it.

6. Sometimes, "I" (aku) does not need to be mentioned in certain sentences because Malay like to make their sentence as short as possible. 

Aku menyekat jalanmu dan aku hanya tersenyum lebar

Aku melipat keangkuhanku rapi dan melemparkannya ke langit

kata-kata yang aku tidak pernah ungkapkan

kata-kata aku yang mungkin tidak akan pernah dapat diungkapkan lagi