If you are running a company right now, the amount of side projects being worked on will tell you how successful you’ll be in the future. If you are a creative person, your side projects will become how you earn a living in the future. That book project you have been working on for ages, that blog you have been writing every day for years, that product prototype you have been building on the weekends — they all matter.
So don’t dismiss your side project as just a thing you do on the side. It is the thing you do that makes you happy, it is the thing you do that excites you and it will, in the end, become the main thing that puts food on your table.
So yeah, side projects matter. They just take time to show you why.