What advice would you give someone who is starting their side SaaS project?

Validate your idea before diving into any coding if possible

Read this book. The Mom Test, by Rob Fitzpatrick. It’s a short read but by far the best read you will do at this stage. Helps you understand the right questions to ask to validate your project. If I could go back in time that’s what I would have done

Be patient and consistent. And don't give up when facing difficulties.

Do a competitor analysis early and work out what makes your product special. Verify this with customers.

Do not use to C perspective to make Saas product