Success all around me - Competitiveness

I am very, VERY competitive in everything I do. I have this mentality "Anything you can do, I can do better". This is not to slight anyone, it's just how I function. It's not intentional. So why can't I find this competitiveness in weight loss? There is success all around me & although they inspire me, that inspiration & competitiveness I feel dies quickly. I don't know why.

So what is stopping me? What is the main factors in my battle? I think the number one problem I have is the food that is provided to me. I don't cook. The dynamics don't allow for me to cook. So I eat what is provided, which is usually not good choices, either because they are simple (processed) or bad for you. This is something I need to wrap my head around. BUT not to make excuses, but it is much easier to microwave something & it is a lot easier to know exactly how much calories/points you are using because it is all there on the box. Otherwise you have to calculate everything & that seems like too much of a hassle.