You always have to prepare for the obstacles that are going to come. Consequently, when they do come, it doesn't affect you mentally near as much as when you're unprepared for them.
We are not going to win because you have a new head coach, any more than you are going to fix a flat tire by changing the driver. We will win the minute all of us get rid of excuses as to why we can't win and stop wallowing in self-pity.