People are often under the illusion that some things last forever. The hard truth is that nothing lasts forever.
There are relationships that last until the day you die. But that relationship wouldn’t be the same relationship you had when you started it. It would have evolved and changed to something unrecognizable. Something that, looking back, you never thought it would become.
The only permanent thing in the world is change, and change comes much quicker than you think.
Whatever situation you find yourself in life, relish the thought that it’s temporary. If it’s bad, all the better. If it’s good, savor it and make it last as long as you can. You may never get that chance again.