I think this is something we all need to hear once in awhile. We live in a world where people want things done quickly, perfectly, and all at once. Sometimes I feel like I'm not doing enough in one day. It always seems like there is never enough time to get everything done. But, that is ok.
There is just no way I can paint an entire series of 12 painting in one weekend. It just can't be done. But small steps working towards one goal are important. Because each small step is working toward something. And if you continue to take those small steps you will be further along then you were yesterday, which is enough.
Spend some time alone working on something you are passionate about. Don't let the failure of one day determine your path. As long as you tried, you made progress.