it's actually a good thing, though the process of the blinkers falling is quite a difficult and painful process - it doesn't happen either easily or quickly...
This usually happens when someone we have been sure of, suddenly decides to break off; or when we've been doing something year in and year out, and the boss thinks that our services can now be dispensed with; or a course of action that we've been on, has to be incised or even surgically removed because it has lost its purpose with us.
The most natural reaction is to want to hang on.....that situation was (or the person meant) comfort zone for us............................that's the unhappy part.
The learning part is when we realize that life isn't stopping, nor are we falling off the globe, but life is going on steadily forcing us to change our course/pattern/thinking/life view...
The good part is that it makes us - after a bit of time, of course - more clear thinking, mentally stronger and more composed, more decisive, and best of all, more positively detached. What's also a revelation is how new ideas and thoughts start flowing, as a result of the brain having got a good shaking...