Right now my small goal is to exercise 30 minutes every day, 10 minutes of cardio, 10 minutes of strength, and 10 minutes of warmup/cooldown/stretching.
Small is relative to where you are starting, though, and what you want to work on. Small goals I have used in the past include:
Drink 5-8 glasses of water per day.
Eat breakfast every day & put it in the tracker.
Walk for 10 minutes a day.
Wear my pedometer every day.
Eat a fruit or vegetable at every meal or snack.
Since you are re-starting, you probably have maintained a few successful habits from your last go-around! You want to pick a small habit that addresses an area that needs more work. I need to exercise more, so that's why my small goal involves exercise.
It's also important to make goals that involve resources one already has. To me "Go to the gym every day!" would be a poor choice because I don't belong to a gym and I don't have proper clothes for going to a gym. But I can walk around in street clothes, so that's a good choice.
My Sparkpage is set to private, but I'm open to SparkMail!
"People often say that motivation doesn't last. Well, neither does bathing--that's why we recommend it daily." - Zig Ziglar