Clingy

Sometimes I wish people will understand the definition of the word "Clingy". According to the Oxford Dictionary on the internet, the term is defined as: 

"(of a person) too emotionally dependent" 

and the derivation is 'Clinginess'. I cannot help but notice as well as those that are close to me begin to notice too, I am having this situation to deal with as one person in my life begins to know more of my friends they become "clingy" towards them as well as myself. I have been told about this and I do not know how to deal with it. 

Why be so emotionally attached to those in my life for if they are already a part of my life? I am already near the level of anger with this "clingyness" and I am finding it really hard to breathe