Hello, "There go my chains". Usually chains represent something that stops us from being free. In this case, it sounds as though this person has been freed from his 'chains'. "There goes the world off of my shoulders". There is an English idiom, "to carry the world on your shoulders", which means that you have a lot of worries in your life. Here, it sounds as though this person's worries have been taken away from him or her. Now, there is nothing to worry about!

I am falling apart since the chains used to hold me together. I don't care anymore because when I did, I carried the world on my shoulders.