Sienna Miller is an "optimistic" person.
The 'American Sniper' actress - who has two-year-old daughter, Marlowe, with her fiancé Tom Sturridge - knows her life isn't perfect but never gets too upset when things go wrong.
She said: "I've always been an optimistic person. Of course not everything is perfect in my life. But if things doesn't work out, my reaction about that is not negative. I don't let myself go down that easily. I'm a real tumbler."
The 33-year-old actress feels lucky to have a "child-friendly" job which allows her to take Marlowe to work with her.
She said: "I take her with me [to work]. On set is like at a big family, everyone takes care of the kids of the others. When I'm shooting my daughter is in my trailer playing. My job is actually quite child-friendly."
Before falling pregnant, Sienna - who has previously been engaged to Jude Law and also dated Rhys Ifans - took a step out of the spotlight because she felt her personal life was overshadowing her work.
She explained to German's Myself magazine: "There was I point when I had that feeling, that the media is doing more reports about my private life than about my work. This is why for a while I have withdrawn. I wanted to bring my life back on the right track. Then I got pregnant. It was perfect timing."