
My
Personal Connection
 Use 'my' to show something belongs to you and you have a personal connection to it. 
I love my new phone.
 Emotional Emphasis
 'My' can express care or emotional investment in the associated noun. 
My darling, I missed you.
 Exclusive Possession
 'My' specifies that the object is not shared with others. 
My bedroom is the only place I can relax.