Your sadness may not be a sign of weak faith, but growing faith. People who love well, in time, will hurt in the heart.
Every time I swear I will guard my heart next time. But I can't help myself ... God calls me to love well and gives me the strength for Him to love a lonely, hurting world through my hands and feet. He gives strength when I am weak! He is the Balm of Gilead for my own hurting heart!
Once long ago when I was about three years old I sat at the dinner table at my grandmother's house. The adults were discussing my grandmother's recent diagnosis of "heart trouble." I listened intently and finally piped up, "Grandmother, don't you know the Bible says, 'Don't let your heart be troubled?' "
In the simplicity of my 3-year-old mind it seemed so simple and IT IS! "Don't let your heart be troubled! You believe in God; believe also in Me." (John 14:1)