Katarina Johnson-Thompson is targeting heptathlon gold but admits she will be happy to return home from Rio with a medal of any colour.
Reigning champion Jessica Ennis-Hill and 23-year-old Johnson-Thompson begin their quest for Olympic heptathlon glory at the Olympic Stadium on Friday.
Although Johnson-Thompson admits Ennis-Hill's victory at London 2012 was a source of motivation, she now wants to emulate her by fulfilling her own Olympic aspirations.
"She has inspired me ever since London so that is what I want to do now - to win an Olympic gold," Johnson-Thompson said.
"Hopefully that's what I can do now. I think everyone has to aim for gold but I'm not going to be disappointed if I just get a medal, it's an Olympic medal."
Johnson-Thompson was on Ennis-Hill's tail at last summer's World Championships, sitting behind the 30-year-old in second place after four events, before failing to register a legal attempt in the long jump at the start of the second day and falling away.
Speaking about how far she has come in four years, Johnson-Thompson, who finished inside the top 15 in London, added: "It's completely different, last year was the first time I'd competed outside of Europe.
"I'm four years older, I think that's four years wiser, though I'm not too sure! At 19 I was just lucky to be there in London. The experience was what it was about whereas this time I'm trying to hopefully get a medal. I'm a lot more focused and not as happy because the job isn't done yet."
Ennis-Hill meanwhile, is looking to become the first British woman to retain an Olympic title in athletics.
"I see it as a massive challenge for me," she said.
"Last year (when she won the world title in Beijing in her first major competition since giving birth) was a massive challenge and I feel like the odds are a little bit against me because it's a huge thing to achieve.
"But it's a really amazing position to be in. I relish this opportunity to go out there and see if I can do something really amazing at this stage in my career.
"Mentally, I've got to be 100 per cent focused. Physically, I'm going to have to be at the best I've been for the past few years. I've just got to hold everything together and know that I've done this before and that I can do it again."