How to Stay Motivated and On Track?

I have been trying to lose weight for a long time. However, I find that I just keep giving up and putting on more pounds. At times I even begin to embrace myself as a "fat person" and forget what I need to do to be healthy.

I am not so much worried about superficially looking good...I really just desire to be healthy and lower my risk for weight related diseases.

I am at a very unhealthy weight currently; I am 21 years old, and weigh 245 lbs. I am 5'7".

For people who have been successful, do you have any advice for someone who is struggling with weight loss?

Ty...