Having goals set for your work is extremely important. Without goals one tends to get lost along the way, doesn't work as much, gets stressed out, tries to do too much at once, etc. Not only is it important to have goals set, but those should be separated into short-term and long-term. This will allow pacing and evaluating progression.

Goal setting needs to be realistic. For short-term goals, you can try breaking them up into weeks or months and establish what you want to accomplish each month. Do you want to increase your traffic by 20% each month? How about adding a 100 subscribers to your blog each month? Those would all be realistic and great goals to achieve from what I have seen so far in the blogging community. You will be able to monitor your progression with these goals, but they will also help keep you motivated.