I have been in business 23 years the first years were lean, working by myself, going without pay, getting depressed and questioning my decision. But it has paid off, for me I was slow and steady, now at 20 employees.

One thing I found was on those slow days go see your commercial customers, just to chat.
In the beginning I got lots of work that way and it keeps you in the back of their mind.

Becareful though you do not want to interfere with their work.

Also remember that customers (heck people in general) do not give one iota about what you are up to, your kids or wife, what they do care about is themselves, their kids and wife. Discuss them. NO Jokes, avoid politics or any subjects that are argumentative.