Answer by taking a quote from the following article:

Three Days Grace is a Canadian rock band formed in Norwood, Ontario in 1997. Based in Toronto, the band's original line-up consisted of guitarist and lead vocalist Adam Gontier, drummer and backing vocalist Neil Sanderson, and bassist Brad Walst. In 2003, Barry Stock was recruited as the band's lead guitarist, making Three Days Grace a four-member band. In 2013, Gontier left the band and was replaced by My Darkest Days' vocalist Matt Walst, who is also bassist Brad Walst's brother.

From March to August 2008, and from January to April 2009, Three Days Grace recorded their third album at The Warehouse Studio in Vancouver, British Columbia, and in Los Angeles, again with producer Howard Benson who had worked with them on their previous releases. The album, entitled Life Starts Now, was released on September 22, 2009. Critics as well as band members have noted the album's departure from the angry tone of the band's previous releases into a lyrical style that is perceived as more optimistic. This album reflects the maturity of the band members as they overcome problems such as sickness and death within their families in which they stated, "We had to be inspired by it, but the outcome is this: It's a new beginning. It's life starting over."  According to guitarist Barry Stock, the album's theme centres around "a new sense of freshness" and the idea that "you don't have to be stuck in whatever it is you're dealing with. Whether it's good or bad, it's your choice to make a change".  Life Starts Now debuted at number three on the Billboard 200, Three Days Grace's highest chart position to date, and sold 79,000 copies in its first week. The album was met with mostly positive reviews. Ben Rayner of the Toronto Star gave the album a negative review, saying it possesses "no sound of its own, just a shallow range between Linkin Park and Nickelback". According to Allmusic reviewer James Christopher Monger, who gave the album three out of five stars, Life Starts Now "...continues the theme of One-X, Gontier's personal demons, but with a 'hint of sunlight'." He complimented the album, saying it "...treats the well-worn metal themes of anger, isolation, heartache, and redemption with the kind of begrudging respect they deserve, pumping out a competent flurry of fist-bump anthems and world-weary, mid-tempo rockers".  The first single release from the album, "Break", was released on September 1, 2009. In support of the album, Three Days Grace embarked on a 20 date Canadian tour lasting through November and December 2009. They co-headlined a January-February 2010 tour of the U.S. with Breaking Benjamin and Flyleaf.  Life Starts Now was nominated for "Best Rock Album" at the 2010 Juno Awards, but lost to Billy Talent III.  Three Days Grace went on tour with Nickelback and Buckcherry on the "Dark Horse Fall 2010 Tour". They toured with My Darkest Days starting in March 2011.

Tell me about the music from Life Starts Now.
Life Starts Now "...continues the theme of One-X, Gontier's personal demons, but with a 'hint of sunlight'."