The 21-year-old literally crashed out of his 400m hurdles semi-final at London 2012, before falling just 0.13seconds short of bronze in the 4x400m relay despite running a barnstorming second leg.
Green also watched training partner Dai Green fall short of a medal in the hurdles final, while Felix Sanchez stormed to gold eight years after winning the Olympic title at Athens 2004.
And, even though his performance in the relay led to a rise in funding from UK Athletics, Green has played down his future in the team event, insisting his main focus is on turning his promise into a major medals in 2013.
But Green admits the example set by 35-year-old Sanchez is leaving him under no illusions as to how difficult it will be to make an appearance on the podium at the World Championships in Moscow.
"I think the Olympics opened my eyes to a lot of things to be honest," said Green, who benefits from the Lloyds TSB Local Heroes scheme.
"Coming away from the Olympics without a medal was hard to take, especially coming so close, and seeing a veteran like Felix win the event shows any aspiring champion what they need to do to win.
"A lack of experience ultimately cost me in the semi-final, all season I had been struggling with my stroke patterns which in turn messed up my consistency.
"You don't really realise the level of talent until an event like that. In the semi-final the guys came flying out of the blocks all around me and I don't think I was fully prepared for that.
"The experience was phenomenal and now the big goal is the World Championships, an appearance in the final has to be a minimum expectation for me as I need to keep moving forward."
But Green does not have his sights set solely on the World Championships, with the indoor season and the chance to reclaim his European under-23 crown in Tampere, Finland in July.
And he is adamant that training alongside Greene and fellow Brit Nathan Woodward is exactly what he needs to ensure he enters 2013 in peak condition.
"We're a good trio because we push each other along all the time," Green added. "In that environment you are bound to get better because you are determined not to be the slowest of the three, and next year I will certainly benefit from being in that environment."