MANKATO, Minn. -- Ten months after the death of his young son in Sioux Falls, South Dakota, Minnesota Vikings running back Adrian Peterson says he has made some major changes in his life.

One of the game's top players -- rushing for more than 1,000 yards in six of his seven seasons and topping 2,000 yards in his 2012 league MVP season -- Peterson called the death of his 2-year-old son in October a reality check for him.

Adrian Peterson credited former Vikings coach Leslie Frazier with helping him make positive changes in his life. AP Photo/Ann Heisenfelt

He learned only two months earlier that he was the boy's father and had been planning to meet him before the boy died Oct. 11. Joseph Robert Patterson, who was dating the boy's mother at the time, was charged with murder and manslaughter after he allegedly assaulted the child.

"It's just made me stop taking things for granted," Peterson said in a recent one-on-one interview with ESPN.com. "Life is short. You never know. You just want to take advantage of the time you do have."

Peterson proposed to his longtime girlfriend, Ashley Brown, on July 4, and the two were married July 19. The couple has one child together -- 3-year-old Adrian Jr. -- and Peterson said he is more careful to cherish his time with the four children who don't live with him.

Before his son's death, Peterson had already begun meeting with a pastor, Calvin Simmons, who ministers to athletes through an organization called National Athletic Pastoral Care, for weekly Bible study that eventually led to premarital counseling as Peterson prepared to propose to Brown. He said he realized during that process that he needed to commit to one woman and live in accordance with his Christian beliefs.

The death of his son, Peterson said, served to reinforce the conclusion he had drawn in his mind about, among other things, stability and commitment.

"It's time for you to really get your life in order," Peterson recalled telling himself. "When all that stuff came down, it's more like, 'Reality check, man.' It's time to start walking the way you know you need to instead of straddling the fence -- knowingly straddling the fence.

"First and foremost, [it was] getting in alignment what God wanted for me in my life and stop [being promiscuous]. I was pretty much doing what I wanted to do, and I could pretty much do that. [It was] just to get in alignment with God, having a wife and really creating that bond and that life. It was more fulfillment knowing the head man is proud and knowing I'm doing it the right way."