Patience

We want everything now, and that's natural. It's an understandable desire for things to fall into place as quickly as possible. But that's not how it happens: most of the time we have to wait, and we don't know how long. That's where patience comes in. It's a "must have" virtue: you have to wait, period. And to avoid feeling the burden of "waiting," you have to practice patience as much as possible.