Lady GaGa believes the ''best drug'' is fame.

The 30-year-old singer/songwriter - who shot to fame in the music industry in 2008 with her debut album 'The Fame' - has admitted being recognised worldwide for her hit songs is the greatest feeling in the world, although the pop powerhouse wants to fight for ''what's true'' rather than for more attention and ''more accolades''.

Speaking to the new issue of Harper's Bazaar magazine, the blonde beauty said: ''Fame is the best drug that's ever existed. But once you realise who you are and what you care about, that need for more, more, more just goes away.

''What matters is that I have a great family, I work hard, I take care of those around me, I provide jobs for people I love very much, and I make music that I hope sends a good message into the world. I turned 30 this year, and I'm a fully formed woman. I have a clear perspective on what I want. That, for me, is success. I want to be somebody who is fighting for what's true - not for more attention, more fame, more accolades.''

And Lady Gaga - whose real name is Stefani Germanotta - has revealed her ''rebelliousness'' as a child filled her with ''a lot of guilt''.

The 'Joanne' hitmaker explained: ''Growing up, I was always told I was a rebel. People would say things like, 'You're defiant,' and 'Why are you dressed that way?' But I continued to do what I wanted and wear what I wanted - because, clearly I haven't changed. For a long time, though, there was a shame that I carried with me. I'm an Italian Catholic - I grew up with a lot of guilt. But what I've started to realise is that my rebelliousness, if you want to call it that, is something that was passed along to me by a long line of tough people - and tough women - in my family.''