There are not many things that last forever.
1. Death
2. True love
All of what is infinite.
Which means that
Sorrow
Anger
Pain
Jobs
Friendships
Material items
All eventually end, or disappear
Whether by choice or not.
Take this as comforting.
To know you are never bound by what seems eternal in the moment
Only by the first, which is inevitable
And the second, which keeps your soul alive