I have heard it said that "tears are windows to the soul.”  

In “The Shack” the Holy Spirit goes around collecting people’s tears – to keep – because they are precious to Him.

One of my fellow teachers says crying is a good practice – it should be done daily.

David sheds many tears as he is running and hiding from heart-hardened King Saul:

“My tears have been my food day and night, while people say to me all day long, “Where is your God?” These things I remember as I pour out my soul...”-Psalm 42:3

“Record my misery; list my tears on your scroll— are they not in your record?”-Psalm 56:8

“Those who sow with tears

will reap with songs of joy."

-Psalm 126:5

I am crying all the time now, as it seems. And it’s good – it is helping. I think God gives us tears to help us communicate with Him through the Holy Spirit – just like it says in Romans, “the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans.” – 8:26 Crying just expresses deep emotions – a movement in the spirit or soul – and that is always a good thing.