6 Small Things You Can Do When You Lack Discipline is a post on the zenhabits blog which addresses the stress we go through as we try to accomplish projects and achieve goals.
I like that he stresses that discipline is an illusion; what we need to focus on instead is motivation.
The only thing I might add to this would be that we often times set ourselves up for failure in our projects and goals. Evaluating what we truly want, what can realistically achieve with the resources we have (time, money, energy, etc.), and what is actually worth doing can make all the difference.
found via Journey of a Kitten
I originally thought motivation was the answer, but then I found out discipline and motivation work hand in hand.