history: Today I had a lot to do on my job, I thought I was never going to finish on time.  But then a coworker helped me with it and we were able to finish before the dateline!
current: Today I had a lot to do on my job, I thought I was never going to finish on time. But then a coworker helped me with it.
next: That was really nice of them! I'm glad you got some help