Where did the day go?

Sometimes I feel there are a lot of things on my plate and sometimes it can be challenging to get a one hour workout in. What I have to do is set a time frame. I have to begin working out between this time and that time and still be able to accomplish what I need for the rest of the day. That way if life takes one of those great turns it takes and you cant start working out exactly when planned I don't feel like there is no time to workout to day!