Here I go again

[Unregistered]

I'd like to know the meaning of "Here I go again" in the next story.

"It's safe to say it stinks," Greisen said of the injury. "I have a lot to prove, and an injury isn't a good way to do it. But at least it happened in the preseason and not the regular season." Moments later, Greisen said, "I was angry when it happened. All I could think about was “Here I go again”. I don't need to miss any time in training camp, especially when I need to prove something to these coaches.'"

[Mister Micawber]

'Here I go again' = I am repeating habitual behaviour.