Missy Elliott feels “blessed” to be alive. The ‘Work It’ hitmaker has struggled with autoimmune disorder Graves’ disease – which can cause anxiety, fatigue, and weight loss – and depression over the years but she is feeling “so much better” now and relieved to be strong and healthy. She told People magazine: “Every day I wake, I’m blessed to be here and in good health. “I’m feeling so much better now. That was a run. Every now and then you get a little ache in the leg or the knee, but outside of that, I feel good.” The 52-year-old singer is hitting the road for the first time since 2004 with h…