Let's return to the work!

I come back have returned to the work. My few days off are over but and I'm so sorry sad, because  I'm very lazy now. Therefore, I need to catch up immediately because I have some job backward work that is past due and I have to make also the day to day daily job work. So stressfull!
By the way, these free days (days off) were wonderful. I was traveled to my hometown. I  was walked by the city center so I remembering all my the interesting sites including the streets, each corners, the quietly squares and others which are noisy as well. There are a lot of reminders why I was enjoy all these places when I was younger from my youth. I'll do return  it more often because it is nice to remember.
Thanks a lot for your time and your patience.

Let's go back to the work!

I came back to the work. My few days off are over but I'm so sorry sad (better to say sad, English people do not use sorry as Spaniards "sentir", you didn't make a mistake not even you are apologizing anybody), I'm very lazy now. Therefore I need to catch up immediately because I have some job backward backlog and I have to make the day to day job work too. (job means ocupación, empleo) So stressfull! 
By the way these free days were wonderful. I was had been traveling to my hometown. I was had been walking by to the city center so I remembered all my interesting sites, the streets, each corners, the quietly (in this case quiet is an adjective) squares and other sites which are noisy as well. There are I had a lot of remembers (to remember is a verb) memories why because (why is used for questions) I was enjoying all those places where I was when I was younger. I'll do it more often because it is nice to remember.
Thanks a lot for your time and your patience.

Good job Emilio! (in this case you can you use job it's an English expression, it means bien hecho!) Keep on writing and practising your English, it will be very good soon! :)