autonomously undertake the activity（自主完成某事的英語(yǔ)短語(yǔ)）

There's a diverse array of idiomatic phrases in English that encapsulate various ways of accomplishing something, such as "to make headway" in progressing towards a goal or “to get one's hands dirty” in practical involvement or hard work.
Each locution carries with it an individual connotation, embedding cultural nuances and showing the richness of language, as in "to eat the elephant one bite at a time," meaning to tackle a big problem or task by addressing smaller, more manageable parts.

A method to keep the atmosphere lively during events: 一個(gè)保持活動(dòng)氣氛熱鬧的方式。

One way to do something

"Doing something的一種方式 is to approach it methodology or technique."