18 stars who are honest about their insecurities

Updated 0156 GMT (0956 HKT) October 19, 2013
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Donald Glover has proven the old saying that stars are really just like the rest of us. On Instagram, the actor/rapper posted a series of notes outlining his fears and insecurities, ranging from the idea that his parents won't live long enough to see him have children to concern his career highlights are behind him. As the following stars show, insecurity is far from a rarity in Hollywood: Jordan Strauss/Getty Images for Bud Light
Mischa Barton has faced constant criticism about her weight, the former star of "The O.C." tells People magazine in an interview about her "full-on breakdown." When she first started her role as Marissa Cooper in 2003, "I was really young and just had not filled out at all. Not everybody stays the same body type. It was always, 'She's too skinny, she must be sick.' " But getting older, she says, it became," 'She's too big.' I was never the right weight." Barton is not alone in expressing doubts about her appearance or abilities. Alberto E. Rodriguez/Getty Images
Former "Harry Potter" star Daniel Radcliffe told CNN he can identify with the poet Allen Ginsberg, whom he plays in the movie "Kill Your Darlings." "I think most creative people like Allen basically veer between ambition and anxiety, between self-doubt and confidence," Radcliffe said. "I definitely can relate to that, even if I don't have the extremes of confidence he has. He was calling himself a genius in his diary, at the age 14! I would never have said that about myself, even to myself. But we all go through that, 'Am I doing the right thing? Is this what (I'm) meant to be doing?' Hopefully in less extreme ways." Kevin Winter/Getty Images
"I say to myself, 'I don't know how to act — and why does anybody want to look at me on-screen anymore?' ... Lots of actors feel that way. What gives you strength is also your weakness — your raging insecurity," Meryl Streep once told Oprah magazine. Andreas Rentz/Getty Images
"The biggest insecurity I had was my singing. Even though I had sold 70 million records, there was this feeling like, I'm not good at this. And while I was married to Marc (Anthony), he helped me get over it. He kept telling me, 'You're the only one holding yourself back from reaching your full potential as a singer. You have to let go'...I was always so insecure and just kind of going along. Then I grew, little by little, and realized, wait a minute, this is not a fluke. I'm not a mistake -- I work my a** off," Jennifer Lopez has told Cosmo. Kris Connor/Getty Images
"I still believe that at any time the no-talent police will come and arrest me," Mike Myers once told Details, via TCM. Francois Durand/Getty Images
"I was always insecure about belonging and felt that my success was probably going to go away, so I've overcompensated," Jessica Alba said in Cosmo. Gareth Cattermole/Getty Images
"I'm very confident in how I project my personality. But in terms of how I look, I'm completely, hysterically insecure. I'm self-loathing, introverted and neurotic," Megan Fox told Cosmo. ROBYN BECK/AFP/Getty Images
"I don't find myself as sexy as everyone thinks. I'm a lot more insecure than people would assume, but with little stupid things. When I get dressed, I'm always so indecisive," Kim Kardashian has told Glamour magazine. Christopher Polk/Getty Images
"[With acting], you have to confront your insecurities quite a lot, and I have plenty, plenty of insecurities. Even more [with the 'Twilight' fame]. Before, you could kind of bulls*** yourself all the time. ... [Now] I'm almost sick at the sight of myself," Robert Pattinson told MTV. Lisa Maree Williams/Getty Images
"Every day feels like the first day, and every day you think 'They're going to fire me; I don't know what I'm doing; I don't know how to do this; I don't know why I'm here, Everybody's going to find out.' But the comforting thing is everybody feels like that, every actor that you talk to says 'I have no idea what's going on...' the feeling is a very common one... if it felt safe it wouldn't feel exciting," Michelle Williams said to Another magazine. Adam Pretty/Getty Images
"People see celebrities, and they have money and fame, but I'm a human being. I cry, and I get scared, and I get nervous, just like everyone else," Beyonce said in her HBO documentary. Ezra Shaw/Getty Images
"I get insecure about everything. I'm still bewildered when people know my name or my face. I can't figure out what they would possibly want to talk to me for," Anna Kendrick told Allure. Jason Merritt/Getty Images
"Many actors are saddled with raging insecurity and I am no exception. I'm drowning in it. ... It's tough (to feel like a sex symbol) standing next to ('Avengers' co-stars) Robert Downey Jr. and Chris Hemsworth," Chris Evans told Us magazine. Jason Merritt/Getty Images
"(After 2002's 'Catch Me If You Can') I choked. I felt this pressure to suddenly be this level of actress that I wasn't confident enough to be. Being an actress hasn't made me insecure. I was insecure long before I declared I was an actress ... I had an existential crisis at the Oscars, sitting next to Sean Penn and Meryl Streep and being like, 'What am I doing here? I don't belong here,'" Amy Adams said to Elle UK. Jason Merritt/Getty Images
When she began dating her soon-to-be-husband, Jason Sudeikis, "I thought, He won't be interested in me; I'm not a contender. He was so cool, so funny — I was such a fan of his and had always fancied his speed and his intelligence. He's a brilliant actor with a brain like lightning. ... I felt like fresh meat at the market ... I thought, I'm not beautiful enough or his type," Olivia Wilde told Marie Claire. Frazer Harrison/Getty Images
"I'm really insecure (about my acting)," Oprah Winfrey told Parade. Frederick M. Brown/Getty Images
"I try to dress appropriately for my age and I'm a realist about what I look like. But if those physical things were my insecurities I'd be thrilled. ... My insecurities are more substantial than that. I worry first and foremost about my children and their health. My husband, and his. I worry about what work opportunities will come up. My own creative satisfaction. How will I pursue things and will the work be good," Sarah Jessica Parker said to The Telegraph. Scott Barbour/Getty Images