To expect or not to expect???

Have you ever stopped and wonder if you should have expectation on something or someone??? Even when i was young, i found that when u anticipate something to happen in the way u want, it always turns out to be the opposite....tat's why, when i was young, i kept imagining myself to be in the opposite situation when I wanted it to happen the way i wanted it....seems to me i have lOOOooong forgotten abt it and just realised tat it's happening again~~~when this happens, i cant help feeling disappointed, a waste of effort and time, sometimes even depressed....well, let me know if this happens to you as well~~~ or you never realise until i mention it....hehehe...time to reflect i guess :p