Develop trust in yourself by having confidence in your own wisdom and instincts. Let me share the story of the Three Samurai. This story has been told many times with many different variations, for our purpose here I will use the version with the three Samurai.
One day a young Samurai was quietly eating his lunch in a tavern of ill repute. This young Samurai was very good with his sword, and decided to ‘clean up the place’. He arose, drew his sword and began cutting down the thieves and murderers who frequented this tavern and led to its reputation. He battled valiantly, but was overcome by the sheer numbers of the riffraff.