Who said "Sometimes all you need is to believe in yourself."?

This quote is attributed to Jim Halpert.

Sometimes all you need is to believe in yourself. - Jim Halpert

"Sometimes all you need is to believe in yourself."

Jim Halpert Motivation

"I'm not superstitious, but I am a little stitious."

"That's what she said."

"You took me by the hand, made me a man."

"I'm in love. I don't know how it happened, but I'm in love with Pam."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."