zorbs did give some good advice for sure
what i'd like to add (because it helped me a lot) is that at the top of the page, you see where there's a tab "Healthy Lifestyle", click on that and on the drop down menu, click on Motivation. on the new page you'll see (to the middle) "Motivation Articles" ,... select "see all" and then choose Goal Setting Techniques.
there are TONs of articles dealing with this and they are have very specific tips that you can tailor to your lifestyle and personality. the big thing is, try some of the ideas and if they don't work for you, try something else ..... eventually you're going to find and/or do things that will make you successful in your journey to a healthier you!