I believe it's not easy or possible to break from obligations. Since you are a part of a society, there will always be certain obligations and expectations placed on you. You might not want to follow them but in most cases you will because that's what people expect from you. You will do things which 'arnt you' but that's life. There's always good obligations, focus on those. Be happy, and trust me being happy is no obligation, it's a choice.