Time is money. I have two categories; 1) high value and 2) low value. High value items are hot and get taken care of right away. Most of the times my high value items bring in high dollars either they will save me more or earn it. The low value are things that are important, but not as important as the high value ones. My work time is always measured in dollars. I want to make sure my time is earning the big bucks first.
Next, delegate. Things that I can hire out, I do. I go through my hire and low value items and discover what can be outsourced.
Third and final tip; I reward myself for every goal that I accomplish. It may be as small as getting a cup of coffee or making a major purchase. There is definitely a reward in my work beyond the compensation.