Hiya - the first bit says "I want everything to be well with us and want us to be happy. I can't be without you." I'm not to sure about the "давай
делай побыстрей дела" part... but the final sentence is "I will try to do all I can".

The next sentence means "I have just come back from work. I am going to the seaside for a holiday as the weather is very good here. My family say hello"

I hope this helps you a bit!