Fixed Number of Variable

I've been having troubles in the past two days. Why do the classmates, friends and readers around me give me heartfelt encouragement and unconditional trust, but another specific and unchangeable "emotion" cannot do it, and instead it makes me wonder. It once made me think that these people are "unintentional". Sometimes when I feel really depressed, Guozi will make a voice call to me and chat for several hours. Only she can change my mood from a low mood to a high tone. She always waits until I smile before saying good night.