People don’t notice things about you as much as you may think. If you have spots, or belly rolls, or need a haircut, it may really bother you and make you self-conscious. But most people won’t even notice. I have dark roots in my hair at the moment and imagine that it is noticeable. I am sure that most people, even if they do notice, don’t care. And if they do care, it is none of their business.
You need fewer things than you think. I have moved several times with little more than a suitcase. Somehow you imagine that all the things you love and need would take up a lot of space. They take less space than you would think. Having many things sometimes actually creates stress rather than alleviating it.