In a post on job searching, Haseeb Qureshi advises candidates to be excited.
Be excited about the company. It’s trite, but it makes a huge difference. Be excited to interview. Be excited to learn about what your interviewer does and the prospect of getting to work with them.
I'm often fascinated how much you learn about companies through the interview process; plus it's often less motivating to do so outside of a job search. This helps me stay excited.