Without pain and sacrifice, we would have nothing.
It isn't possible to love and part. You will wish that it was. You can transmute love, ignore it, muddle it, but you can never pull it out of you. I know by experience that the poets are right: love is eternal.
We have to learn to utilize our negative experiences and make them stepping stones towards a wiser version of ourselves, rather than a loss.
Patience is not the ability to wait, but the ability to keep a good attitude while waiting.
Surely God would not have created such a being as man, with an ability to grasp the infinite, to exist only for a day! No, no, man was made for immortality.