keep to every promise I made

Last night while I was assuring my mother that I’m going to shoulder the sweet potatos for her all the way from the suburb market to home at 6 o’clock the next morning, I was joking at first and then I thought isn’t it a wonderful thing to keep every promise you have made? So this morning I did it, and the feeling is very good, so I’m going to keep every little words of mine from now on!