Some people say that office work is perfect and it is one of the best places for career ladder.

You should say "it's one of the best places to climb up the career ladder." You can't just say something is the best "for career ladder" because a ladder is useless if you're not going to use it. 

They put their foot in it because usually it is not true.

"Put your foot in it" is better for embarrassing - sometimes funny - mistakes. Like, "They really put their foot in it this time!". 

You get up very early so as not to be late to the office. You can be a bit out of sorts or at loggerheads with your girlfriend; it doesn’t matter because your boss will hit the roof if you are not in the office on time. You always have to be as right as rain. Therefore, you put on casual clothes and leave your home. On the way to the office, somebody might get your goat and spoil your mood. After that, you come to the office like a bear with a sore head.
You always do the same work and talk with the same people for a donkey’s years. Eternal daily routine. You try to pull your sock up in order to get a promotion and a higher salary. However, your pig-headed boss gives you a cold shoulder. It is not allowed for you to say something against him. You'd much rather hold your tongue.
Your colleague can say: “Come on, dude! Call it a day! Let’s get the hell out of here!” Nevertheless, you understand that in that case you will get into hot water and can be given the sack.
On the way home you walk into a supermarket and buy junk food for a song because your salary is almost over. Finally, home, sweet home! But you are a deadbeat and still hard up. Suddenly comes the understanding: you are completely cheesed off with this life.

Your use of "deadbeat" is a bit off - deadbeat is usually used to describe a parent who doesn't adequately provide for their kids, like "My deadbeat Dad drank all our money away." 

Grim story dude. I hope it's not autobiographical. 

I'm from Chile

Hi, my name is Sergio. I'm 24. I want to learn to speak and write in English. I could teach you to speak and write Spanish.

Mucho gusto! Estoy aprendiendo español. 

First notebook entry: Introducing myself

Hello everybody! My name is Alya, I'm from Uzbekistan but I live in Russia. I'm 17 years old. And I would like/love to learn English and Turkish because I like learning languages, meeting new people and cultures. If you wish to learn Russian or Uzbek, I will gladly help you. Thanks.

 

I'd love to learn Russian, but maybe when my Romanian is better. ^_^