Just as it's important to pay attention to your writing productivity in order to get the most out of the time you spend writing, you will want to pay attention to your writing goals to determine which goals are effective, and which are ineffective.
How can you set goals for your writing that will actually help you sit down and write? Can you come up with any goals that will motivate you so much that you'll enjoy setting and achieving them?
At the same time, which goals do you dread or resist? Which goals sap your motivation? How can you avoid setting goals like these?
Obviously, if you aren't in the habit of setting goals for yourself in your writing, this exercise won't make sense to you (and I've got news for you: you're toast as a writer).
But by setting goals, assessing their effectiveness, and then periodically tinkering with those goals, you can make yourself a far more productive writer.
What sorts of goals do you find most effective for you?