Camila Cabello felt she had to "prove" to her collaborators that she was a real artist.
The 'Havana' hitmaker felt it was important to make sure her fellow artists know that she was a great songwriter as well as a singer and says hitting the studio with the likes of Diplo and Shawn Mendes "taught her a lot".
She said: "I just really wanted to prove to people that I had something to say and that I wasn't just a singer, that I was an artist, that I had a point of view and knew exactly the song that I wanted to write or the lyrics. The first few weeks were me really wanting to prove that to people and prove to myself to. People I was writing with were like, that's actually a really great lyric, or that's a really good idea, or oh yeah we should do that!
"That made me less and less insecure to the point where by the end of it, I feel like the last studio session I went to, I would come in and know exactly what I want and not be afraid to say it. And all of that is just experience and finding confidence in yourself. All the people I worked with were so nice and encouraging. It taught me a lot definitely."
And the 20-year-old singer has recalled how she suffered from acid reflux when she hit the studio with Diplo.
Speaking to MTV, she added: "I think in the beginning it was really nervewracking. I remember the first time I had a writing session with Diplo, I was so nervous that I got acid reflux. Emotionally, I can just like feel it in body so it was just like that for the first few months. So the first time I went into the studio with him, I was so nervous."