Muhammad Ali fought exclusively upright for over a decade before his nemesis, Joe Frazier, finally knocked him down in the 15th round of their famous fight at Madison Square Garden in 1971. By the time he hit the ground, Ali was behind on points and unlikely to win the match. Instead of staying down, Ali struggled to find his feet and then regained his stance and continued the fight.
If you want to build self confidence, do it the same way you would with others.
Make promises that you keep.
That will build other's trust in you.
It will also build your own trust in you.
Make yourself a promise today... then keep it.