Hey there, I am an Australian entrepreneur with two businesses and I can relate to your question. The brief nature of your question indicates to me that you're possibly feeling a little defeated. It's completely natural for someone who takes risks and runs on the edge of possibilities to feel this every now and again, so resist the urge to be too hard on yourself!
I agree with the others, the solution depends on the context and how you arrived at this point.
For what it is worth - when I'm stuck, I find walking away and not thinking about it for 24-48 hours is the first step. Followed by going outdoors with pen and paper and venturing to places that I know will inspire fresh thinking, lateral thinking, about ways over/under/around/through the obstacles making me feel stuck. Particularly if you work from home often or have been spending all your time in your office. Change the scenery.
Do you have a "Brains Trust" or "Advisory Board" you can discuss your current status with and gather insight and advice from? Or people you can turn to who will give a constructive but critical review of where you are at? Having a business mentor / coach assists me during these times - it can be too easy to try to go it alone and tough it out... too easy, but ineffective.
Would love to have a call with you if you'd like to discuss your business and challenges further.