My parents believed I was nuts: "With no real world experience you should not create a company", they said, "first work for someone else, get experience, and then make a company if you want".
My girlfriend thought I was also nuts, she blackmailed me: My (stupid) idea or she. I chose my stupid idea. She wanted to get back a week later but it was too late.
My friends could not understand either why take "pies on the sky" when I had good options on a "real work".
After creating my company everything took way longer than expected, I started believing it was not a good idea after all, you only have the energy you have after it is depleted.
But one day I read a document I wrote when I started my company and was incredibly shocked that everything I wrote down in the past was becoming real in the present!!
Things started to roll, I got more confident...in the end it was a huge success precisely because it was such a crazy idea.
Had I followed my parents' advice, I would never have never done what I did, "experience in the past" would have blocked the possibilities of the future and the beginners mind.