Mitchell Whisenhunt left dozens of letters for his wife and daughter to help them through their grief after his death.

In July 2010, just after his wedding, Mitchell Whisenhunt was diagnosed with Marfan syndrome. For four years, through multiple surgeries, illnesses, setbacks and recoveries, the Longview, Texas, man fought the rare genetic disorder, literally fighting for each breath.

That fight ended Oct. 18, 2014, just nine days before his 27th birthday. He left behind his wife of four years, Ashley, and their 18-month-old daughter, Brynleigh. But he also left behind a gift that will keep Mitchell in their hearts and thoughts for years to come.

As reported by KLTV, Mitchell wrote more than 30 letters for his wife and daughter, as well as other members of the community, with instructions on when they should be opened, going up through his daughter's 18th birthday. Ashley says she will honor Mitchell's wishes and open the letters as scheduled, saying that they were a reminder of how "he was thinking about us" right up to the end.

A GoFundMe page set up for Mitchell's treatment is still active, with funds going toward his funeral expenses.

According to one letter, addressed to the community, Mitchell hoped that the expense for his memorial service would not fall on Ashley, saying "the last thing I want her to worry about is the coming cost of my funeral."

Share Mitchell's story with your loved ones, and leave your own message of sympathy in his Guest Book.