Meghan Trainor planned her whole career using a vision board.

The 20-year-old singer claims her success is a result of mapping out what she wanted to achieve in a collage which included a record deal and Grammy Awards.

She said: ''I had a vision board! [On it] I had No1 song in the world, and a record deal - and a week later I got a record deal. And I didn't tell anyone this, but I also put up a picture of the Grammys.''

The 'All About That Bass' hitmaker has since come a step closer to achieving the latter, with her breakout track being nominated for Song of the Year and Record of the Year, but admitted she didn't feel worthy of a pop career as a teenager due to her figure.

She confessed: ''Growing up with my insecurities, I was, like, 'I don't look like those pop stars do. I'm not that pretty, I don't know if I could do that.'''

The star later became involved in music as a songwriter for Rascal Flatts and co-wrote the single 'Sledgehammer' for Fifth Harmony, but penned her number one smash hit 'All About That Bass' when she decided she was sick of not being the performer of her songs.

Recalling the morning in which she wrote the track - taking only two hours to do so - she told the Sunday Times' Culture magazine: ''It was the first session where I walked in and I was, like, 'I don't wanna write for someone today. I don't wanna pretend I'm Rihanna or Maroon 5. I just wanna write a hit song for the world.''