Our greatest glory is not in never falling, but in rising every time we fall.
Everybody fails. No one talks about their failures that much, only the things that go right. For everyone success, there are probably several failed attempts that proceeded it. The key part of being successful is coming back to the drawing board after failure. Failure is our greatest teacher and our greatest motivator. After failure, you are never truly starting over, because you have learned valuable lessons of what no to do again.
Each time something doesn’t work, gather yourself, take a deep breath, create a new plan of attack, and go for it again. Repeat this process as necessary.