I picked A
You can't live a positive life with a negative mind. We all do it sometimes. We all become negative over time. But, it's important to have a positive attitude, for the sake of your mental health. Just saying "It's okay, things are going to be fine" can make you feel better, even during tough times. It can make your life so much happier. It lowers your levels of stress, and gives you more energy. It might be hard, but we have to try!