The key for me was to really keep it simple and by focusing on small daily actions.
First: Identify what you want.
Second: Think of new habits you have to create to achieve this goal. Think of daily actions you have to take. Try to come up with something that is not longer then 15-30 minutes, easy measurable and can be done on a daily basis.
Third: Write them down, and log/track everyday if and what you did.
Examples:
get in shape -> 20 chinups a day, 40 pushups a day, workout at gym twice a week
become a tidy person -> make your bed in the morning, clean desk before sleep, 10minutes home-improvement.
Health -> Drink 3 liters water. Only eat wholegrain foods.
To keep a log of my actions i even created my own online-tool, you can use too. As you can guess I wrote down an action such as: 30min work on tracking-tool.
Daily-Actions.com - Helps you achieve your goals!