1)Although I have a time-management, which I try to follow, I forget to do unimportant works sometimes.
2)I promised not to dissapoint her again.
3)It's pretty late, but I don't mind waiting for you anyway.
4)He likes wasting time on holidays, so he doesn't miss getting up early in the morning for going to school again.
5)Don't give up, try to keep going and never look back.
6)Actually I don't fancy going to the beach today, because I'm already exhausted.
7)He has a deep depression, so he needs to call me sometimes for the sharing his feelings.