Recently hit 50

Hi there, just joined and not completly sure how this whole thing works... any way I just turned 50 and have 30 extra pounds and need to get rid of the extra weight before it escalates and affects my health, and also I want to look and feel as good as I did until about 5 years ago, but gradually lost motivation and found myself chubby which didn't happen before... anyway, there it is, please feel free to share with me your experiences!!!