“I can’t” means I won’t.

Instead say, I will.

“I failed” means I gave up.

Better to say, I’ll keep trying and learn from my failures.

“I wish” means I’m likely fantasizing.

It’s more productive to think of a wish as a firm commitment to guarantee results.

“I tried” is often code for I’m now going to stop trying.

Look at trying not as a virtue, but a continuous way of life. 

“I have no confidence” is frequently a way to say, and I’m not getting any confidence, either.  

Increased confidence begins with “yes, I can” not harboring thoughts of “no, I can’t”.

The words we tell ourselves determine the way we think.

Change the words.

Change the way you think.