Working hard and to a high standard is absolutely the right thing to do in any work. But while your business is new and gaining interest, you need to avoid burning yourself out! In your own business time is money and if you push yourself too hard, your exhaustion will lead to mistakes, injuries and poor work. That’s not something you want to show when starting up your business, and a bad habit to continue as your sales will suffer.
So plan your hours thoughtfully to ensure maximum productivity, if you cant do it yourself then employ someone else to help you! And always make time to fully give yourself a break!