A proactive or positive attitude; being active or forward-looking. (In modern usage, usually seen as 積極的.)
彼は会議でせっきょくに意見を述べた。
He actively expressed his opinion at the meeting.
会社は新規事業にせっきょくに取り組んでいる。
The company is proactively working on new projects.
せっきょくと消極（しょうきょく）はしばしば対照的に使われる。
‘Active’ and ‘passive’ (sekkyoku and shōkyoku) are often used as contrasting terms.