Sadly, there are tragedies that could have been avoided if the person would have gotten help. For example, teens hurting themselves etc.
If you know something going on, out of the ordinary, don’t wait for it to get worse. Some people might be self conscious about therapy, but it’s better for people to seek help, rather than let it fester.
Sometimes, just listening to someone helps them to relieve tension and feel that someone understands and cares. But they might need something more, like therapy if they have bigger issues. In any case, give them the love and care they need