I have heard it said, and said it myself.."There are just not enough hours in the day to get everything I need to get done, done." Here is the true problem with that statement--God created the day and all of the hours in it. Since, as far as I can tell, God doesn't make mistakes, there indeed ARE enough hours in the day for us to accomplish His will for our lives. So, what's the problem?
For me it is usually the following: Not Choosing What is Better
Martha (of Mary, Martha and Lazarus fame) had the same problem. As she "busied" herself with the dinner prep, and Mary sat at Jesus' feet pouring over Him and every precious word out of His mouth, Martha became more and more irritated. Not only at Mary for doing "nothing", but Jesus for allowing her to do nothing! The nerve!
But Jesus rebukes Martha. (Luke 10:41-42) "Martha, Martha you are worried and upset about many things, but only one thing is needed. Mary has chosen what is better, and it will not be taken from her."
Have you chosen too many good things to fill up your time? (Making dinner for your guests is not a bad choice. After all, it needed to be done eventually.) I bet don't have enough time to complete all of your tasks. Or, when you are done, you are completely frazzled and spent. Or have you chosen what is better? You would have enough time if you allowed for the latter.