The first time I ever cold called anyone I was terrified. I don't know why, but I think there's a natural fear of rejection. Fortunately, my co-founder taught me how to do it and now it comes as natural as programming. This article doesn't mention it explicitly, but having a professional teach you how is what you need to get past that initial fear of rejection.
Hellow, There is many ways to sell your project, if you want to. and for your question that if you should sell or take it down?
my advice is , it depends on your feelings or what you feel about i, if you want to sell or just take it down?