Much like everything has a beginning, everything has an end. Even death and existence will cease to exist eventually. As our great prophet H.P. Lovecraft said; "That is not dead which can eternal lie, and with strange aeons even death may die." However death is not necessarily the end. I'm not going to talk about the afterlife, but death really is not the end. It might be the end of your life on Earth, but your body is still there. Eventually it will decay, and probably become worm food. Those worms will then become food, and so will what eats the worms. Eventually we will eat whatever it was. So try not to consider that really. That when you eat something, you could be eating the nutrients of your ancestors. Don't let that scare you into veganism. As The Lion King taught us when the plant eaters die (I'm not sure which ones in particular it was, it's been years since I saw that movie) they become food for the grass that grows to feed them, as well as food for the lions. Or it was that when the lions die they become food for the plants, which becomes food for the plant eaters, which becomes food for the lions. That's a more complete circle so I'm going to go with that.
Plenty of other things end though, as well as life. TV shows, video games, movies, everything has an end. There are some things I don't want to see the end of. Such as Frasier. I will however see the end of it eventually. When I watched Home Improvement I never actually watched the final episode. There are plenty of games I haven't finished as well but that's due more to my short attention span.
Everything has an end, no matter what it is. But the end isn't always the end. The end usually is the start of a new beginning. Typically the beginning of your life without what just ended. But sometimes the end causes new things to arrive. If a relationship ends, it allows a new, and possibly better one, to start.
Sometimes, things don't end how we want them to, how we think they should. But, always, they end how they need too. If you go on for long enough, then you'll come to realize this in time. I was a mess when my ex left me, and for the longest time I didn't think that was how it should have ended at all, but over time I have come to think it was the best. Everything ends in the best way it can, either for you, or for other people involved. Except life I guess. Sometimes death is a horrible and painful thing, and it should never be. Life can be like that too sometimes though.
Okay I seriously need to stop writing. It seems even this post had to end eventually.