Meaning of not getting deviated by the worldly life

Q: Allah mentioned to us not to get deviated by worldly life and not to love the worldly life. Is this correct?

If yes then we Muslims should not become engineers in software and technology because it leads to development of the world which leads to people loving and getting deviated by worldly life, even if it has benefit then it may also have no benefits. 

Covering a small amount of the awrah that was exposed during salaah

Q: I have difficulty concerning covering my awrah during prayer as a female.

1. I have quite a small forehead, and the hairs that cover the sides of my forehead are not the same length as my hair overall, but they’re longer than a person’s usual baby hairs. It causes me to overly look in the mirror and fix my scarf before salah just incase any show, and also causes me to bring my scarf down really close to my eyes. Due to this difficulty, if these certain hairs show during salah, can I overlook this?

2. Another thing I have a lot of difficulty covering are my wrists. Even If I try to use long sleeves, sometimes during sajdah the sleeve of my wrist gets lifted upwards (like towards the ceiling) - if that makes sense - due to me laying my forearms on the ground. Today, I saw my sleeve on my wrist during salah and it looked lifted and I had a slightly strong feeling that the way it looked it was probably showing my awrah but I didn’t attempt to change it because I was confused about what to do. I couldn’t tell if more than a quarter was showing or not from the angle I was sitting. I was also not sure if I should have moved to fix it regardless of if it was less than a quarter.

- If I notice that less than a quarter of awrah is showing during salah, then do I fix it or can I leave it?

- Can you confirm if I properly determined the quarter of my arm during salah because I’m not sure if i’m doing it right. To determine if a quarter of my arm shows, does it mean that my elbow is considered the halfway point? I feel guilty because I felt like if I had a strong feeling that my awrah was showing, I should have hidden it.

Authenticity of a dua to be recited on Aashuraa

Q: There was a message going around on Aashurah day that read as follows: Zainul Aabideen is reported to have said that whoever reads the following duaa between sunrise and sunset on Aashurah will not die the following year, meaning this is a guarantee for his life for a year. And if a person is to die co incidentallly he will not read this duaa. And there was a long duaa mentioned after. Is there any authenticity to this?