I need help!!

I am brand new to this site. I graduated college 2 years ago. When I started college I was about 120 pounds I used to model...dance...etc. I gained more than 80 pounds in college just by being careless. Although I know that will be impossible to get back to, I would like to be able to get back to where I am happy with myself. I have found that I cannot be successful without others to encourage me. I am a counselor so I spend my life encouraging others but I need help!