The 30-year-old now regards himself as far more of a team player than he did during his first spell at Ibrox, but has also revealed that a settled family life and an end to late nights and drinking sessions has led to a more mature character.
"You grow up and realise there are places you can't go and things you can't do," said Boyd, who scored 22 goals for Kilmarnock in the SPFL Premiership last season. "I was 23 or 24 and you probably get involved in scenarios you shouldn't be in.
"I don't go out any more and I am settled with kids. I am a totally changed man. If you let Glasgow take hold of you, it will, but playing football while getting out the road and enjoying your life is what I am looking forward to.
"Rest assured, this will be a totally different Kris Boyd from last time. I am happy spending time with my family and that is the most important thing rather than drinking with your mates or messing around in snooker halls.
"There won't be much difference on the pitch because I showed last season with Kilmarnock what I am going to do."
Boyd won two SPL titles, two Scottish Cups and two League Cups during his first spell at Rangers, scoring 128 goals in 192 appearances, and has warned a number of his new team-mates that they are just about to discover the unique pressures of life at Ibrox as they prepare for a competitive SPFL Championship campaign.
"This league is going to be tough and it is probably the first time a lot of people in the dressing room are going to realise what it takes to be a Rangers player," he said.
"The fans will demand that we win every week and I think that is part of the reason the manager has signed players he knows can handle that pressure."
Boyd also hinted he would like to stay beyond the one-year deal he is currently operating on. "I am in it for the long haul," he said. "If I do it this year, it might end up three or four years."