How has your knowledge of the Plan of Happiness changed/benefited your life?

My brother and I got married with in a few months of each other. His wife and I had an instant connection and became great friends. We shared our newly wed lives together, sometimes it felt as if we were sisters, rather than sisters-in-law. Before my brother and his wife were married, she shared with us the sadness of her illness. She had been diagnosed with brain tumors as a senior in high school. My brother and my family were grateful to have her in our lives. We didn't care if she lived for a week, or day, or years, we knew if she were sealed to our family, she would be with us forever. That is an extremely special promised blessing. After they were married 2 short years later, her sickness became rapidly worse. As my sweet sister's body slowly shut down, I had the marvelous blessing of serving her and talking with her. As we talked about the days to come, I became very emotional, knowing what was ahead. She quickly comforted me and said, " I will see you again. I know I will." What a wonderful belief we both share. She pasted away at the young age of 24. Within a year my husband left me and my two children. I felt very lonely and hopeless. However, it was in those moments I felt my sweet sister whom I had served while she was physically ill. She was there serving me when I was emotionally ill. I have a very strong testimony of the Plan of Happiness. I know without a doubt, there is life after this. I have felt my dear sister and I know we will be together again. Our sisterhood will be just as real as the one we shared on Earth. What a truly amazing blessing. I am grateful for that knowledge and promise. We have a loving Heavenly Father who wants nothing more than us to be happy. He has created an amazing plan for families so we may be forever together.