Own business started

Starting own business really not an easy job. Especially at the beginning of the business started. Every beginning week of the month, I started to worry about the income of the month. Will I get some business on the month? Can I collect the outstanding payment from the customer on the month? Can I have any other source to earn some income? Once I got the job, surely I will have the income more than I work previously. But when I can't receive a job on the month, means that I going to tight up my stomach for the month!!! Luckily, my business started until now, still everything working smooth. Just sometimes feel frustrated when chasing payment from customers. Even for now, I still everyday looking for some other income which can be my stable income instead of I always waiting for the job coming. 10 days to go, the end of this year is coming soon. Hopefully in new a year coming, my business is growth and I can have my stable income every month.