The best way to sell yourself to others is first to sell the others to yourself.
Thought is the most highly organized form of energy known to man.
You are the master of your destiny. You can influence, direct and control your own environment. You can make your life what you want it to be.
Set your mind on a definite goal and observe how quickly the world stands aside to let you pass.
By all means tell the world how good you are - but do it with actions, not words.
When your desires are strong enough you will appear to possess superhuman powers to achieve.