Just Quit My Job and Start My Project

Hi everyone!
Recently, I got an inspiration from many people that they quit their jobs and are self-employed. I found someone that has been successful with his/her projects so I decided to do the same is quitting my job and starting similar one. Website: https://cool-stuff-to-buy.com/ (Website is in progress of development so needs your advice and ideas to sky-rocket)- It is about platform that people can view and buy cool, unique, great, and awesome gifts - stuff collection site.
Please let me know your ideas that to grow the site or any recommendation to make it better.
Any ideas are welcome!
Have a nice day!