Most of us have probably at some point in our lives tried to hold on to something that we should have let go of a long time ago. It can be very difficult to let go of the familiar, but no matter how stubborn we may become about letting go, one day the thing or person we're fixated on will most likely either leave us or get so far out of our reach that we won't be able to get it back anyway.
So, although letting go can be painful, it can also release us from the potential of being hurt by that very thing that we found it so hard to leave behind.