Have you actually TRIED to do it, and you just feel you can’t do it?
Yes
No
If you have tried, and it didn’t work. What was not successful?
It would have been uncomfortable. (Ex. I was too tired.)
Why can’t I do it?
It is too physically painful.
It is too emotionally painful.
I unable to physically do it.
It is uncomfortable.
What can I do?
I can’t do it right now.
I feel I may never be able to do it.
I know I will never be able to do it again
I could do it, possibly, if I worked hard on it.
I can do it but I have to do something (or several things) else first.