The Mega Millions lottery prize has climbed to an estimated $1.35 billion. 

If there's a winner after Friday night’s big drawing, that individual or group will receive the second-biggest jackpot in Mega Millions history.

While playing the lottery can be fun and exciting, past lottery winners and mental health experts say it's important to keep the activity just that — fun — and not as a potential windfall that people begin to plan a future around.

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"Playing the lottery should be fun rather than stressful," Tim Schultz, a past Iowa lottery winner who claimed a multimillion-dollar prize, told Fox News Digital by email. 

Schultz won $28 million in 1999 when he played the Iowa Powerball.

Tim Schultz Iowa lottery winner

Timothy Schultz, who won the Iowa Powerball in 1999, told Fox News Digital that playing the lottery should be fun for people, not stress-filled. (Timothy Schultz)

He was working at an Iowa gas station back then, and sold the winning ticket to himself, as FOX Business reported earlier.

Playing the lottery should only be done "responsibly," said Schultz.

Today, Schultz is a podcast host and runs a popular YouTube channel.

He interviews other lottery winners who share their experiences after they strike it rich (see one of Schultz's recent videos below).

"You should only play if you can afford to lose the cost of the ticket. You don't want to put yourself at financial risk by playing," Schultz said.

Friday night’s jackpot would also be the fourth-largest prize in U.S. lottery history. 

If a winner takes the cash option instead of an annual annuity, that person would receive an estimated $707.9 million, FOX Business reported.

"I only spent what I could afford on it and had fun."

Playing the lottery should only be done "responsibly," Schultz said.

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"The truth is that it only takes one ticket for a chance to win," he said. 

"They say that winning the lottery is like being struck by lightning. Well, it only takes one ticket to enter this storm."

lottery ticket

Lottery ticket is shown here. "By purchasing a ticket, you are purchasing the right to dream about what you will do if you win. And it is possible – someone will eventually win," noted Schultz, a past Iowa Powerball winner. (iStock)

"The odds do not significantly increase by purchasing tons of tickets," Schultz also said.

He continued, "There is a reason these jackpots are getting so high. If you cannot afford to lose two dollars or however much it costs to play, then please don't play!"

Schultz said playing the lottery with the right mindset can be "fun."

"If you aren’t putting in your full effort into your job in hopes you’ll just win the lottery, that is likely going to cause more harm than good."

"By purchasing a ticket, you are purchasing the right to dream about what you will do if you win. And it is possible — someone will eventually win," he said.

Schultz said he had a "vivid dream" about winning the lottery "a few months prior to it happening in real life."

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He also said, "It inspired me to start playing. Some people believe that's a coincidence. Regardless, I only spent what I could afford on it and had fun."

a clerk hands a patron a ticket

In this Jan. 13, 2016, file photo, a clerk hands a Powerball ticket for cash at Tower City Lottery Stop in Cleveland, Ohio. Timothy Schultz of Iowa called winning the Iowa Powerball "surreal." (AP)

Schultz continued, "I joked with friends that it was going to happen. Needless to say, it was very surreal when it did."

The game's top prize sits at over $1 billion because no one has won the Mega Millions jackpot since October — causing the prize to increase across 25 drawings, according to multiple outlets.

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One Vermont psychologist said that people play the lottery with "a fantasy" in mind about how their life could change with a huge win.

"Fantasy can be healthy as an escape," said Dr. David Helfand of St. Johnsbury, Vermont.

"But it can also start to cause issues when people live in their fantasy, despite their reality," he continued.

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Helfand, who shares tips on mental health on his website, Lifewisevt.com, also said, "For example, if you aren’t putting your full effort into your job in hopes you’ll just win the lottery, that is likely going to cause more harm than good."