JJJ, goodluck to you!

-define you goal (you want to lose weight because you want to be confident, do it for yourself and not to please others)
-start today (do it now!)
-focus (practice self discipline)
-know what motivates you to do this (i.e. you want to reach your toe when you bend your body, etc)
-be happy (still don't deprive yourself on you want to do and eat)

Don't get depressed, losing weight is long time process. Some take it for a year, don't rush it or you're health will be in danger.