Post break up

I just can't seem to get out of this funk. It's been almost a month and my friends and family are trying to get me to go out and do stuff and I just can't😢 my ex is staying busy (I know I shouldn't care what he is doing lol) but I know that's the way he deals with stuff. I feel ugly and just don't have the motivation to get ready and go out. Any tips or advice would be great!