Davies had been an ever-present in the Welsh engine room during the RBS Six Nations however he was a surprise omission for the World Cup games against South Africa and Samoa.
Davies had to look on as Luke Charteris and Alun-Wyn Jones were the preferred combination before getting his chance against Namibia.
And the Cardiff lock, who is waiting to see if he gets the nod for the crunch tie with Fiji, admits that team glory has to come ahead of personal ambition.
"It's swings and roundabouts," he said.
"One day you are in the team and playing on top of your game - the next, you are on the sidelines.
"But we are trying to develop world-class locks, so competition is part of the deal. It's good for Wales. Maybe in the past we haven't been blessed with that so much.
"Not being picked for the South Africa game was a blow because I thought I had been playing well for Wales, but if someone is picked ahead of you just have to deal with it.
"If I am not picked, I am not picked. I don't make an issue of it. The other guy is better than me in the eyes of the selectors.
"I just try to train hard and make an impact off the bench if I get that opportunity."
Wales held their own against South Africa and Samoa, losing by a point to the Springboks and defeating the South Sea Islanders 17-10.
And following the romp against Namibia, Wales need to beat Fiji to book their place in the quarter-finals.
"In the past, we have been happy to perform well against the big sides. But once you start performing well, you want to get results," Davies added.
"Too many times we've been in a situation where people were saying 'Wales performed well, but they lost again'.
"That is what the summer was about, trying to make sure we are able to perform for the full 80 minutes. We're clinical, powerful and we look fit.
"Fiji beat us in the last World Cup, but that was four years ago. We had a different squad and a different coach - what happened then isn't really an issue now.
"We know Fiji will be a massive threat.
"A Rugby World Cup is a massive thing in a player's career, and you want something to remember it for.
"The last World Cup wasn't great for Wales, but now we want to have fond memories and leave a legacy."
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