"I think part of the reason why we hold on to something so tight is because we fear something so great won't happen twice." Sad thing is that holding on will also keep a greater thing from coming. Fear should never be a motivation.
The fact that as a human we expect things. The good and the bad. But we find that we are taken aback when either comes. Remember that things are better in the end. If it's not okay then it's not the end.