It's psychological. You're in a situation that you are powerless to direct. For a majority of people, immigration provides an opportunity to better their lives and aim for bigger than the potential that is currently available for them. You are probably living in a society where for it's every man/woman for themselves. A society where, unless you have your fists at the ready, things can be taken from you and you need to prepare to fight for it. You are in control of your life because you need to be otherwise, you are left behind.
Now imagine having to give that control and future to someone you don't know sitting in some stuffy office on a swivel chair that has seen its days, sipping on their 5th cup of coffee as they stare into endless texts, viewing document after document, knowing very well that when they finish the submission they currently have in front of them, there are already 1000s waiting to be reviewed. Now add to that the fact you see other people around you getting the PPR and that's when you become your worst enemy. "Why haven't I received PPR yet? There has to be something wrong with my application. Did I choose the right NOC? Did I upload the original PCC along with translation?" You begin to question everything with no answer suitable to quench your lack of control. You are powerless to do anything at this point and that feeling eats at you.
This leaves you with two choices:
1. Release the anxiety and come to the conclusion that there are things beyond your control and when faced with such situations, let them be. Give them time to blossom and develop until you can regain control of your destiny.
2. Fret of the lack of control and understanding, and take it to heart. Share your pains with the rest of the world either through this virtual forum or manifest it in the real world.
Both options are OK. We are human with complex emotions. However, the consequences of both (for your mind, body and to those around you) are different. Choose the best path and never regret the option you choose.
When you have control over situations, grab it and see that it takes you to where you want. When you don't, just breath in and know that you cannot direct everything around you.
With that, I would like to share my salt lamp with you and I apologize for the zen-post.