Why does it impact my life so much

People who tell me “life isn’t all about looks” make me feel so stupid… I don’t know what to do. I feel absolutely rubbish. I don’t know myself why it impacts my life so much.. why does it? I feel it from the second I get up and have to get ready for work, compulsively outfit change 10 times and still feel SO insecure. To do my makeup and still feel insecure. To change my hair style 10 times.. yep, still insecure. I go into work feeling rubbish the entire time I’m there and try stay sat down as much as I can so nobody looks at my horrible body. I feel insecure to even walk home and would rather pay for an Uber than even think about people seeing me looking so ugly on the way home. I get home and see how bad I’ve looked all day and it hurts so much. My boyfriend then comes round and I feel too ugly to even be with him. I try not to let it ever show around him though. Recently it’s been a million times harder for me and I’m really really struggling. It makes me feel rubbish to go out in public.. which I hate because I love to be social and go out but then when I’m out I feel awful. I don’t want my partner to start thinking I’m lazy or boring on the days I do feel too bad to leave the house.