The following is framed on my office wall.  It keeps me focused when things don’t go according to my desires.  As I read it here again, I realize that it also very much applies to software implementation:

1. Things will not always go exactly as you have planned.

2. Things might take longer than you have planned.

3. You might encounter some heavy bumps while following your plan.

4. The bumps may frighten you.

5. You may have to change direction to get where you want to go.

6. You might have to temporarily ‘park’ in a place you don’t want to be and this might trigger anger, fear, worry, impatience, and resentment.  And while all this is going on you may think and act as ifyou are the ‘only one’ going through this.

7. You can, however, go through all of these seemingly negative situations with a smile, if you have trained yourself to do so.