One of those up-and-coming leaders is Brandon Carlo, whose view on life has changed significantly over the last couple of weeks. The 24-year-old and his fiancé, Mayson Corbett, welcomed daughter, Wren - their first child - on September 2.
"The sleep hasn't been going great, but other than that it's been fantastic," Carlo said with a smile. "What an amazing blessing it is to be a first-time Dad. Man, I can't even explain how full my heart is and I feel like that's a great thing going into the season.
"Kind of gives you a different perspective on gratitude and the situation of life. I think it will really ground me in a lot of ways and help me in life and as a hockey player."
Carlo, who missed the final three games of Boston's second-round series against the New York Islanders last spring with a concussion, is looking forward to what he believes will be somewhat of a new chapter for the Black & Gold.
"It's exciting. It is significant," Carlo said of some of the changes to the B's roster. "Over the past five years of being here we've had kind of a stable group of the same guys but it definitely revives the energy. I met Nick Foligno the other day and love him. He's been fantastic so far. I feel like he's gonna be great for our team.
"It's just fun meeting new guys, honestly. Just building chemistry with guys, friendships…I love it. I love the feel around the room and I'm really excited to get going."
The blue liner is also eager to team up once again with Mike Reilly - who inked a three-year deal with the Bruins on the opening day of free agency - after the two built a strong rapport as Boston's second defense pairing at the end of last season.
"I really love playing with Mikey," said Carlo. "I feel like our skating ability enables us to get up the ice a little bit more and I feel like he gives me the luxury to be able to do that as well, getting up the ice. I would say I'm probably the more defensive-minded one on the pair, but overall, I feel like he does a good job of trying to implement me into certain things.
"I love communicating with him. Mostly, I love just being on the bench with him and having fun. I've noticed that right off the bat with him. He loves to enjoy the game and enjoy the moment.
"That's the biggest thing that I need to do moving forward and that will make my game that much better and he definitely helps me with that."