new year, new me...right?

It's the start to the new year and I feel like I'm stuck in a rut. Nothing seems ok, my love life is in the dumps, my weight is at a ridiculous all time high and my job really bites. I've always thought that if I could control my weight then everything else in my life would fall into place. I haven't been able to control the weight, and it's coming to the point where I feel like I'm losing control of everything else. I keep telling myself that I've got the tools to do what I need to do but I never seem to do it. so, I'm 25 now, and have vowed that I shall not have ongoing body battles at 30 because I want to be comfortable within myself enough to enjoy the rest of my life. So this is the last time I start a new excercise and diet regimen.
The last time I tell myself I can't do it.
The last time I cheat on myself.
This is the last time because if I don't go through with this, knowing all that I know, then I think I need to change strategies. If I can't lose the weight, then I have to find a way to be comfortable with the me that i am now.