At any stage of your startup, there is one specific thing that most of your energy should go to – raising money, development, adding a feature, talking to new types of clients. Always make sure you decide on what it is, and put the majority of your time there.

Many of the mass services require an internal trigger to happen in orders for users to come back to the service. What are yours ? ( example, using facebook when you remember your ex girlfriend, go to booking.com before booking a flight)

If you do it, and keep them (if they believe in you and the business), you will be fine

You need to be the expert of your industry- find ways to love it and keep interacting there