After spending the past seven seasons as the face of the Atlanta Hawks, Joe Johnson has had to adjust to being a piece of the puzzle in his first season with the Nets.

But after having the weight of a franchise on his shoulders in Atlanta, Johnson is excited to have a fresh start with the Nets, who begin a West Coast trip tonight here against the Kings.

"I definitely feel rejuvenated," Johnson told The Post after a recent practice. "I feel like this is a new beginning, a new start for me, and I just want to make the most of it.

"When you look back on your years in the NBA as you get older, you see how fast that it goes. This is my 12th year, and I can't even believe that. But I've been grateful, and I just don't want to have any regrets when I'm done."

He said he has no regrets about his career to this point, one that saw him flourish as a member of Mike D'Antoni's run-and-gun Phoenix Suns teams before Johnson left to become the go-to guy for the Hawks in the summer of 2005.

Knicks coach Mike Woodson watched as Johnson came to the Hawks, turning a once moribund franchise into a perennial playoff contender and a fixture near the top of the Eastern Conference.