Set up a server, code for hours using node and Mongo trying to realize your dream. FINALLY complete it after a lOOOng time of blood and sweat..

Then find out that a Noob who didn't know the first letter of web programming used FireBase and did what you did in a fraction of the time

I think I've reached the point where I can question what I've done, my purpose in life and.. As for my confidence I think it successfully descended during my last visit to the bathroom