For they conquer who believe they can.

It generally happens that assurance keeps an even pace with ability.

There can be no great courage where there is no confidence or assurance, and half the battle is in the conviction that we can do what we undertake.

Only trust thyself, and another shall not betray thee.

Experience tells you what to do; confidence allows you to do it.

Confidence doesn't come out of nowhere. It's a result of something... hours and days and weeks and years of constant work and dedication.