I will totally admit that I have INTJ envy. I really wish I could follow through, plan, and complete projects better. I wish I could make decisions and then STICK to them. I do find most INTJ to be a little "dour", but I would probably have P --> J reassignment surgery if I could!
The point is, the part of myself I'm always vowing to change is really not something that I can change, probably.
Are there any older, wiser INTP who have learned to just accept Pness? Or do you still feel chagrined by "failure of the P" moments?