#10b: Build your network before you need it.
The best time to build your network is months before you need it. Whether in a crisis or when you need more mundane support from a colleague, these are the moments you should be drawing down your balance of favours, and reaping the benefits of your relationships.
Your network comprises relationships; cultivating relationships takes time. Connect with a colleague before you need anything from her. Think ahead on who you may work with in the future, whose expertise, support, or network you may need.
This is not to say relationships can't be formed through crisis. While the best time to build your network was months ago, the next best time is now.