Tired and weak

Currently on day 7. I work on myself since a long time and I notice a lot of things going on. I feel so tired all the time, is this normal? And also foggy brain, anxiety talking to people, depersonalization. I'm in my had a lot and tend to worry what others think about me. It feels like I'm suffering right now, is this normal? I don't care about other people but I want to... I'm like unplugged from the world around me. I just function. I will grind through this journey definitely, I just wonder if I do well enough, and when it will be better.