When you had a paper due at 2pm, you got it in on time. Whether it was for your professor or your boss, there was outside pressure.
Today however, many of your goals are only due to yourself. With no one watching over your shoulder, will you have the motivation and drive to complete something tough?
Commit to an outside deadline - if you can tie in your goals with existing schedules, you'll more likely finish. You might try scheduling a party at your house if you want to get unpacked or clean up, registering (and paying for) a business plan competition if you want to get the plan written, or signing up for a class in the skill you want to learn--both monetary and social commitments will help you to follow through
Schedule a time with someone else to work together - like my "Project Weekend," a scheduled time with someone else can accomplish wonders and be a lot of fun. It's always great if you can return the favor, too