The Wales international, who has won cups with both Celtic and Liverpool and scored in the Nou Camp in the Champions League, joined his hometown club in the summer and has scored four times for the table-topping Bluebirds.
Malky Mackay's men need seven points from their remaining five fixtures to guarantee a place in the top flight next season, something that would complete Bellamy's career.
"If we do go up, of course that would be the highest achievement in my career," he told Wales Online.
"I wouldn't mind sitting here in a month's time having achieved that and telling people about it.
"It's difficult to say it at the moment because I have to show respect to Hull and Watford. I don't want them to turn around and say `Look at Cardiff, they think they are already up'. Because we aren't yet.
"But we are getting there. And if we do reach the Premier League, it will take is onto another level.
"The impact promotion could have on my community could last years and years. That is what drives me on. That is what gives me satisfaction at this football club."