“Genius are full of doubts while stupid are full of confidence”.
That’s true and but isn’t that is unfair ,people judge you just by confidence . One quick way to gain confidence is : “Do what you are afraid of ?”. Whether it is to prepare for a speech “ Do a mock up speech in front of friends?” Be it a algorithm problem “Just ask someone else for help if stuck but don’t put it on tomorrow !” or Be it making a Blogging site: “Just do it . Refactor it later”.
One shouldn’t wait for perfection . Iterate later . And Let keep it short that way .