FAILING FITNESS STRATEGY #1: You're doing too much, too soon.
"... being too ambitious with your workout goals can leave you physically drained, mentally fatigued, and even injured. Plus it simply burns you out mentally and makes it hard to stick to a routine."
FIX IT: Learn how to set realistic fitness goals that suit your current level and your lifestyle.
FAILING FITNESS STRATEGY #2: You've overcommitted.
"... that daily routine can quickly become a drag when you feel like your body never gets a break and your schedule is consumed by exercise appointments, and little to no downtime. "
FIX IT: Whenever you start or make changes to your exercise routine, make sure they are changes you can live with for the rest of your life.
FAILING FITNESS STRATEGY #3: You don't have plan.
"... Without a plan, you're more likely to give up because you don't have clear direction or ideas about what to do or how to reach your specific goals. "
FIX IT: Creating an exercise plan and setting goals along the way can help you stay focused and motivated as well as measure your progress.
FAILING FITNESS STRATEGY #4: You expect unrealistic results.
"... Change doesn't happen overnight. It can take time to start seeing gains in strength and endurance or changes in how your body looks. "
FIX IT: The truth is that change takes time, but with hard work and dedication, it WILL happen!
... Limit the number of times you weigh in to no more frequently than once a week, and even then, don't expect to lose more than a maximum of 2 pounds per week.
... With your body, change will happen slowly; others will probably notice it sooner than you will.
... Be patient and remember to find other ways to measure success that go beyond weight, body fat, pounds lifted or miles trekked.
... Reward yourself for your consistent efforts—not just the outcomes of your training—and you'll stay motivated long enough to stick to a routine that will provide results.
(I hope these can help me with 2013 goals :D)