and good-bye makes the journey harder still

I'm continuing to see how I am alway sad at the end of things, despite any vast array of good and bad feelings I felt toward whatever I am saying goodbye to. It's the end of something and with that brings the possibility of never having it back or knowing that it will never be the same even if I do have it back again. What if that thing was actually so good relative to the things that lie in the future? I think that that scares me.