Disappointment

Why is life always full of hopes and disappointment? ):
How i wish we don't have hopes and therefore, no disappointments. Always so excited about something but in the end, it doesn't goes smoothly. Or is this only happening in my life? At times, i do envy people's life. Life is like that. When you don't have this thing you want so much to get that thing. But when you have it, you don't know how to appreciate it. Idk, i hope things on my side do get better please. :) I don't know how long i can hold on.