Really nice and inspiring article.
Most of us become unhappy when we are overly attached to materialistic things and become happy when we get them. As you correctly explained it is good to stay unattached from such things, focus on your real passions and staying focused on problems that need a solution rather than pondering over why the problems occurred in the first place. We go through good and bad experiences many times in life but it is up to us whether to relish the good ones/learn from the bad ones or simply show off in good ones/keep crying over bad ones.
Keep writing such nice articles even in the future :D