21 Year old looking to lose 55 lbs by graduation

I've spend too much of my high school and collegiate career overweight. I'm just at a point in my life where I want more confidence and want to feel good about my body and need some support to do it. I've done MFP before and had decent success but just gained it all back (even more in fact) and want to commit to some lifestyle changes long term. I don't want to be unhealthy and would love the support. Graduation is next spring so I have a little over a year to lose 55 pounds and get things in order. Best of luck to everyone else here!