Ongoing suicide struggle

"The best advice I can give to someone who's gone through something similar is to talk about it and let people in," Brooke Reigelman said. "Eventually, you have to stop asking yourself ‘why' or thinking you could have done more because you will only beat yourself up about it."

DiPaolo said Hart's death was the hardest thing he has ever gone through, and it is taking a very long time for  him to make peace with it. He said he started feeling alone and abandoned, and he had so many unanswerable questions.

"You never know what's going on inside their heads. If you notice a difference in their life, talk to them. You never know, you may just save their lives," DiPaolo said.