Do all the struggles of starting a business go away as you become more and more successful? For example, all the stress you had, more free time etc.
Your confidence in the survival of your business should develop as the company becomes more durable and sustainable which only comes in time. The more you systematically put company profits in a reserve account the more confident and peace of mind you will gain. I was always stressed out as an owner until we were able to save money week in and week out to withstand a downturn if it came.