Adele was scared of "looking into the future" with her new album '25'.
The 'Hello' hitmaker - who released her third studio LP on Friday (21.11.15) - says she has been focusing "massively" on how to move forward with her career, something she didn't think she'd have to do for at least another decade.
She said: "My whole life, even this comeback - because that's what it is - is built around my kid. One of the scariest things about my new album is that, for the first time in my life, I'm looking into the future, into the next 20 years. Before it was all about what you'd do on Friday, plans for the weekend.
"I'm moving forward in a massive way, in a way I didn't think I'd be doing for another ten years.
"But I'm also looking back at my past, and deciding what to take with me."
And another scary prospect for the singer is the idea of getting "lonely" after performing on stage.
She told USAToday.com: "There's something quite lonely about the idea of performing for people and then going home on your own."
However, the 27-year-old star has vowed to perform a string of shows, especially in America where she had to cut her 2012 tour short due to a vocal hemorrhage.
She previously said: "I will do as many US shows at least as I did last time, which wasn't that many, so don't get too excited."