How to Be Confident as a Woman of Faith

Hey y'all! So I have been really struggling to be confident and productive and motivated as a woman of faith. My lack of confidence has caused me to be lately very socially awkward. I'm afraid to go outside my house because I feel like I look super fat or my acne is too bad. I lack motivation to get up and work out, do music (which I hope to major in for college, this will be my senior year), shower, eat healthy, wake up early, do college stuff, spend time with friends. I really only spend time with my boyfriend. My insecurities about my body are constantly causing us to get into arguments but I promised to get better. Also he and I are waiting until marriage so shout out for that!!! I want to feel better, look better, and do better and I know through God I can do it, but I'm not sure how to really get started. I have all the tools, I know all the verses, I know what I should be doing, but I consistently find myself in bad places. Any advice I would be grateful for thank you!!!