@MrDIY ...
@Barbaraj .. I thank you both for your input, which is excellent and makes perfect sense. I think it takes an outsider's prospective to be able to see things more objectively.
MrDIY, yesterday, my husband also told me that I was being too hard on myself. He thought I managed well on the stairs (but since that was not how I felt afterward, I became upset and frustrated).
I can ascend and descend on the stairs; feel safe? ,not really .... I need someone to be there ( not holding me, but right there).
I have 5 steps to a landing (which actually has a bench for taking a break) and then there are another 8 steps to the top. I just started the steps this week. I've only done the entire staircase one time, and that was with PT. I have gone to the landing with my husband.
Now after re-reading my previous posts, together with your responses, I think I can see that I have not given myself enough time and practice. I also think that my expectations were unrealistic ( but since my first attempt with the stairs in the hospital on days 1 & 2 had gone so well), I expected that I would do the same on my stairs at home, but they were two, totally different experiences (again, I was still under the effects of the injection given into my hip during surgery, which lasted 2+ days).
As far as the leg lift and slide exercises, I don't know why I couldn't do them (pre-surgery). They were part of the pre-surgery exercises and when doing them became difficult, I just figured it was part of the arthritis and degenerative changes in my hip. I am not going to stress over it. PT tried something today to see if it would make a difference. He held the heel of my foot and then had me try to slide. This time, I was able to slightly lift/slide. He felt that reducing the friction might make it easier. Again, I won't stress over it. And, as long as what he is asking me to do, is not painful, I will continue to try. If something becomes painful, or if I have any type of pain afterward, as a result of PT, I will absolutely stop and refuse those exercises.
One last thing.... (Sorry this is sooo long), since I have no problems with the walker, PT had me try using two arm cuff crutches. I happened to buy them knowing that after the walker, I would be needing some other kind of support. Although I do have a cane, I wanted something that would help me feel more supported than a cane. The crutches will take some getting used to and a lot of practice.......but I felt really good about using them. I think it helped me also feel a little more positive about my progress, just knowing that I was ready for something else.
If that is firm I can put you on the list and add to your signature?
United States
.... But also absolutely right. 
I am glad to hear you are seeing your boundaries regarding exercises that are unhelpful.
