As a business owner/entrepreneur it is easy and normal to have self-doubt now and then. Did you do the right thing? Are your plans good enough for growth? Will the finances be enough? Did you make the right decision in the last call? Not enough clients etc etc..
But the fact that you were brave enough to take the plunge and work against odds to make your dream come true is already a testament to your strength.
Hold your head very high, make a victory fist and celebrate your conviction! What brought you here will be a catalyst to get you there as well!