I don't know whatever gave you that idea, but it's not entirely true.
Firstly, think of your website as an actual business, because that's how Google will attempt to view you. The first thing you need to do is set up social media accounts (Facebook, Twitter, Pinterest, Instagram) for your website. Then:
- Make sure you're creating 1000+ word articles around twice per week. Content is very, very important.
- Send social signals to those pages. (Likes, shares, tweets, retweets, favorites, etc).
- Create a press release on one of the popular press release website about the launch of your website.
- Create some powerful tier 1 links. These are the type of your choosing. (High DA/PA).
- Shoot some web 2.0's or Social Bookmarks (if these aren't already your tier 1 backlinks) towards your tier 1 backlinks.
Note: This is a VERY rough description of what needs to be done. Tweak it a little and find out what works best for you.