Uma Thurman "drives [herself] nuts" with her "overly intense" personality.
The Hollywood actress often throws herself into her acting projects with gusto. Uma says her focused nature sometimes backfires, and finds working on film sets calms her down.
The star has two children with her ex-husband Ethan Hawke Maya, 13 and 10-year-old Levon, and says filming is her time to unwind away from family life.
"I'm not very relaxed naturally. I'm one of those highly-focused, overly intense characters. I often drive myself nuts," she revealed in an interview with Stylist magazine.
"I actually find work can be quite relaxing. When the children were little I wasn't able to work like I did before. So now, when I do work, it's very much like, This is good, this is my time.'"
Uma is currently starring in Bel Ami alongside British actor Robert Pattinson. The 25-year-old actor is famed for his portrayal of vampire Edward Cullen in hugely popular fantasy franchise Twilight, and Uma says she had some words of advice for the rising star.
"He's very serious. He did a huge amount of rehearsal in his own time. I think that's what you do as a young actor, when you take your work very seriously and want to take it to the next level," she revealed.
"You know, when you've been doing this a really long time it's hard to take it all so seriously. I said to him Don't get too upset about it because before you know it, Twilight will just be an old film that made you lucky enough to get another job.'
"But when you're in that position and you're young, it's hard to hear through the noise."
Uma says there are times when she wishes she could regain her pre-fame anonymity. The 41-year-old star thinks she's very well-adjusted though.
"Of course," she exclaimed when asked about wanting to return to being anonymous. "But, for me, because I started so young, I have never had an adult life where I've known any different.
"I saw from early on that [fame] could make people crazy. It's probably made me crazy, but I've been re-grounded by recognising that. I'm very grateful for my career; I know what a blessing it is."