United Kingdom, May 18 -- Tina Fey is grateful she didn't find fame until her 30s.

The 'Four Seasons' actress joined the writing team of 'Saturday Night Live' in 1997 but didn't appear on camera until 2000, and she thinks her life experience before then taught her not to take things so seriously.

She told Britain's HELLO! Magazine: "The beauty of impostor syndrome is that you vacillate between extreme egomania and a complete feeling of, 'I'm a fraud! Oh God, they're on to me!'

"Having become a public figure later in life than most has helped me deal with the aspects of intrusion into my private life.

"People do treat you differently, so it's nice to come into it a little bit older, because you know not to believe it 100 per cent.

"Ev...