Star swimmer Rebecca Adlington says winning her first gold at the World Championships has given her lots of confidence.
She's just returned from Shanghai, China, where she won gold in the 800m race as well as getting silver in the 400m.
She's also won gold at the European Championships, the Commonwealth Games, and at the last Olympics too!
She says she's more motivated than ever, but can still improve.
Rebecca says she needs to work hard now to secure a place on team GB for the 2012 Olympics in London.