"I have not failed. I've just found 10,000 ways that won't work." (Thomas Edison)

"Everybody is a Genius. But If You Judge a Fish by Its Ability to Climb a Tree, It Will Live Its Whole Life Believing that It is Stupid". (Credited to Einstein but I don't think he actually said this).

"Just keep on showing up".

"I don't care. I'm still here"" (from a Langston Hughes peom).