I can totally understand what you are trying to say . I suffer from extreme attachment issues too and am overly affectionate and clingy, which often results in me being really sad and heartbroken on not receiving the same kind of response from the other hand . The only way to stop is trying to be emotionally independent . People can not always be there for you , even people who make big claims and show that they care can leave you . Journaling helps a lot, whenever you feel like you have to rant or tell someone someting journal instead, talk to yourself in detail . Write out how you are feeling , whats making you sad and suggest yourself ways that will make you feel better . Hope this helps