The first one points out the futility of worrying so much:
The second one reminds you that holding on to things from the past, prevent you from moving forward. Events happened in the past, but they are not happening any longer, but if you hold on to them you are recreating them every time you think of them.
Take action today and enjoy everything you are doing and what the day brings to you.
June 27/2012 just came across this quote: