enthusiasm, passion

to go forward, to advance, to progress / to improve, to progress

voluntarily; willingly

progress

to burn / to get fired up

fire / a flame / cooking fire / a firestarter / sparks / light (matches or lighter)

(chiefly women's speech) first person singular pronoun: I, me

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

(formal) first-person singular pronoun: I, me