My day))

Today was a difficult day. I worked all day, of course I like my job but sometimes my job is heavy going.
In the morning I bought an English book, I heard that this book is easy and interesting, my goal is to read it, I suppose tommorow I will begin to read this book. And Afterwards I am going to write about this story, maybe you will be interested ))) If you like romantic books I'm sure that you will like this book will like you! I know that it is four hundred pages and I can ask say that this is the first English book which have I decided to read ))) Good luck to me))[Wish me luck!]
Goodbye

You know how to take on a challenge Lubachka!

I was thinking of changing your sentence to: ".. sometimes my job is hard." but ".. heavy going" can mean the same.

Den

My day))

Today was a difficuld difficult day, since I worked all day. Of course, I like my job, but sometimes my job is heavy  tiring.
In the This morning I bought an English book. I heard that this book is easy and interesting. My goal is to read it, I suppose tommorow tomorrow I will begin to reat read this book. And I am going to write about this story, maybe you will be interested ))) If you like romantic books, I'm sure that you will like this book will like you! I know that it is four hundred pages and I can ask that this is the first English book which I have decided to read ))) Good luck to me))
Goodbye

I wasn't sure what you meant by "heavy" so I changed it to "tiring," which is a more common English expression. Also, I fixed up some spelling errors. You really like to use commas when you should be using periods, so I fixed that up as well. 

I'm curious what the title of the book is. Is it something I've read?? In any case, good luck, and happy learning :)

My day))

Today was difficult day. I worked all day, of course I like my job but sometimes my job is heavy.
In the morning I bought English book, I heard that this book is easy and interesting, my goal is to read it, I suppose tommorow I will begin to read this book. And I am going to write about this story, maybe you will be interested ))) if you like romantic books I'm sure that this book will like you! I know that it is four hundred pages and I can ask that this is the first english book which I decided to read ))) Good luck to me))
Goodbye