We have sorrow at death, at loss. Sorrow is from God, because it will help us turn more to God for healing, for comfort, for friendship. We'll turn toward God. Anything that makes you turn toward God is from God. Sadness will always make us turn away from God.
Sadness can lead into hopelessness, into despair.
I'm never going to change. It's never going to happen. There's never going to be a light at the end of the tunnel for me. It can go on and on, and we can get very, very sad, and we're not turning to God for the help we need. So whatever the emotion you are feeling, if you see that you are turning to God then that would be of the Good Spirit.