people who like the excitement of uncertainty. are slightly concerned about winding up somewhere dull; playing  part in a compromise that you find tedious to keep up.Many of the duties that you now feel obliged to attend to seem like challenges that you could do without. 
You are not directly responsible for as much as you seem to think. Others are allowing you to take weight on your shoulders, partially because it suits their own need but mainly because you seem willing to carry it. In putting down what you should never have picked up, you won't be shirking an obligation. You will simply, instead, be showing respect to all that you truly are responsible for in your emotional life.What you may call it:your love for your own people or sense of responsibility or carrying weight you should not carry!