When can I let go

I think what I told the counsellor was correct.  Reason why I am always throwing my temper at home is because I have high expectations of them. 

I expect my parents to be able to take care of themselves, able to spend their time wisely and actively.  I expect Kemp to really take care of himself well, In terms of health, weight, studies.  

Why the high expectations?  Is so that I can let go of them, so that I can lead my own life peacefully, so that I dont have to always worry about them.  

But when can I ever let go?  Not that I am not willing to but somehow somewhere I am always needed..... 

When can I ever let go