THIS IS IT


Meaning of THIS IS IT in English

1.

the expected event is just going to happen :

Well, this is it! Wish me luck.

2.

this is the main point :

'You're doing too much.' 'Well, this is it. I can't cope with any more work.'

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.