In its own right

1. Does "or the most irksome of all the early failures that come for mending" mean "or the most annoying early failures that should be healed"?

2. Does "outside the area of the subject’s omnipotent control" mean "outside the area of his/hr own omnipotent control"?

3. Does "in its own right" mean "independent"?

Text:

First there is object-relating, then in the end there is object-use; in between, however, is the most difficult thing, perhaps, in human development; or the most irksome of all the early failures that come for mending. The thing that there is in between relating and use is the subject’s placing of the object outside the area of the subject’s
omnipotent control; that is, the subject’s perception of the object as an external phenomenon, not as a projective entity, in fact recognition of it as an entity in its own right.