Open Question: what kind of diet plan should i have?

Communication 16,4 '10 and have arthritis, depression, and spina bifida. I weigh 125, want to lose weight. Please help my arthritis makes it difficult to develop and a little cold weather does not help, but I like to ride a bike, I, I ate a lot of depression and long-term constipation, spina bifida makes me plz no rude comments, real-time, only 16