It's true that nearly everybody has known suffering and distress. But sometimes such feelings start to dominate one's life and can't easily be dealt with by trying not to mind.
However, as an oldie, I can say that age brings a certain acceptance. You learn to live with yourself and to be kind about your own shortcomings. Also, I've found that turning one's thoughts towards others and their difficulties is a tremendous way to heal. If one has experience of suffering, one is in a good position to support and help other people in their low moments.
I have a dear friend who is a Samaritan, and she tells me many of her fellow volunteers have been through very bad times, and can empathise well with callers because of this.