When we can begin to take our failures seriously, it means we are ceasing to be afraid of them. It is of immense importance to learn to laugh at ourselves.
Risk! Risk anything! Care no more for the opinions of others, for those voices. Do the hardest thing on earth for you. Act for yourself. Face the truth.
Make it a rule of life never to regret and never to look back. Regret is an appalling waste of energy, you can't build on it it's only good for wallowing in.