add and subtract things

Before starting this session, it's for my english lession and I'd like to save the answers for the lessions. sometimes I'll add some non-lessioned but useful sentences. today's topic is '30-day challenge' from TED video. q. what did the speaker learn during the 30-day challenge? -> he learned it's difficult only to start something.

But when we started to do sth, he realized he could do more and harder 30-day challenges and his confidence got bigger. Instead of the months flying by forgotten and ...