It's sad to hear Park Yongha ssi chose this way to settle his personal stress or problems.
There are really a lot of thoughts on which way to settle stress or problems and too bad we heard a lot of suicides everyday, and even from performers/artists.

I know many kinds of artists--performing, visual or creative arts... and there are really setting their self-esteem very high and a lot self-achievement goals too. Those sitting on the higher status are very lonely and do not share with others much, nor their family or friends. They try very hard to kick off the blocks on their way to success/higher self-esteem with so much hard work all by themselves...very stressful.
Whenever there are problems, if they are willing to share with their close friends/partners, things will go better. Some will choose to share with counselors with confidentiality -- this will be a better choice if artists do not want to share it with familiy or close friends.
Hope that artists' professional managers will realize more and help.
Everyone will need at least one or two reliable "others" to share whatever in his or her mind. Be strong and face the stress and problems...don't live on prophecies but the realities...and understand that every human being has his/her limitations, and no one is perfect in whatever form.
May Park Yongha ssi rest in peace....my sympathy to his family and friends...
Jiwoo ssi , please take good care of yourself...both in times of happiness or sorrow.