I just can't do things right. I don't say no to things I don't want and then I get upset about them. I don't say no as I don't want to cause a fuss or upset someone but then I think about things until 3am and get no sleep and repeat this until I'm exhausted. I hate confrontation and I always feel like I'm the bad guy. I can't cope with this anymore. How do people cope with anxiety and stop themselves from over thinking simple things?