I certainly agree with you that happiness is fragile and also can be very fleeting.
Also the statements that those of us who suffer from depression can really appreciate the happiness when it comes to us feels very true to me.
I have actually used that line to some when trying to explain how I feel. So many seem to take it for granted not realizing how quickly it can go away.
I have just been helping someone through the grief process after losing her husband, she never realized how fragile her happiness was until this. It breaks my heart to see her like this but she never again will take it for granted.
I wish everyone would wake up before its too late. Life is too fleeting and fragile to ever be taken for granted. Linda