I don't think one can accept helplessness, because when you are helpless to a situation you want to change, you get frustrated, it is a natural response, ok not a nice one but there is little you can do to change it, so i think you can accept the feelings involved with being helpless to a situation can be accepted as natural, but accepting you are helpless is far harder to accept especially if you are one who is used to being independent. e.g i can accept that when i am unable to do something i want to do i will feel frustrated because i used to be able to do it, but i can not accept i am helpless as there are loads of other things i can do, and i deserve to be helped at times, just like everyone else.