One of the main reasons why people are motivated to do a job well is the sense of <em>achievement</em> they get from it. Achievement is the feeling of pride that comes from knowing you have done your job well.
A second type of motivation that is common in the workplace is that of <em>power</em>. Some people get a lot of pleasure out of having power and authority. This is not necessarily a bad thing, as sometimes these people are particularly good at directing others and can make good managers.
Both types of motivation are common, and they can be very important in the workplace. However, the sense of achievement can be created by the person individually, and requires little group work. On the other hand, the motivation of power depends on the type of interaction the person has with others.
You should let your emotions out. Don't hold them in that only makes it worse... Losing someone you love is very hard and i'm glad you're still here... You should try to vent to someone you trust so you can let everything out. I hope you're okay and i hope you know you're loved.
"she" would be the pronoun.
You can rewrite this question as "She is your best friend?"
So in that case, "she" would be the subject.
In English, you just switch around "is" and the subject to make a question and make it sound Englishy
PS in Italian (and probably other languages) you would just say "She is your best friend?"
