"No ray of sunshine is ever lost, but the green which it awakes into existence needs time to sprout, and it is not always granted to the sower to see the harvest. All work that is worth anything is done in faith." - Albert Schweitzer
I'd like to second that. It really messes up my plans.
I joked two weeks ago that at work, the only thing that has stayed the same so far this year is that I'm in the same office (location-wise). Then, last week, we decided to move a bunch of offices around.
I should have quite a bit of job security based on my performance and what I do for the company, but I just can't feel secure about anything due to all the changes...