Abigail Sailors nearly missed out on the tip of a lifetime because she's simply too damn happy.

When two anonymous customers came into her Cracker Barrel in Lincoln, Nebraska, they asked the hostess to seat them in the section with the grumpiest server so they could make that server laugh.

But the hostess informed them that none of the restaurant's servers were grumpy, so they were forced to settle for the happiest server instead.

When they asked Abigail, 18, why exactly she was so happy, she gladly told them: Her life had been full of misery.

A car crash that occurred when she was still an infant incapacitated her mother and forced her and her four siblings to be placed in a foster home after their biological father was deemed an unfit parent.

"All the horror stories you hear about foster care," Abigail's sister Sydnie told the Lincoln Journal Star, "we lived through it."

After their foster father was imprisoned for abuse, Abigail and her siblings were split up by the state and remained apart until reuniting at a new foster home nine years ago.

"It's a great home, great people, amazing," Abigail told the paper, referring to the home of her foster parents, John and Susi Sailors. "I don't know how I would have turned out if I didn't have them. They shaped the person I am today."

It was exactly the misery that she endured as a child which made her the happy person she is today. "[My] life could be worse," she explained to the Journal Star. "But it isn't."

Once she was done unfurling her the story of her life so far before complete strangers, she moved on to talk of what's to come.

Abigail was excited about having completed her first semester at North Dakota's Trinity Bible College, but was uncertain if she could continue attending due to a lack of funds.

The mysterious patrons had heard enough: One of the two men, who was a Trinity alum, took out his checkbook and promptly wrote Abigail a tuition check for $5,000. He then wrote another $1,000 for supplies and necessities.

Then, at the end of the meal, he left behind an extra $100 tip, which Abigail shared with a fellow server.

"I couldn't believe it," Sailors is quoted as saying. "I tried to thank them, and they said, 'Thank God.'"

[photos via Facebook]