How to keep my motivation?

Nightwing394
I always get these little spurts of motivation to work out and eat right but it never last. I really need to loose weight. My friends say I don't need to, but I really want to. It's the only way I can feel good about myself I guess plus I am actually to heavy for my height.. though I have a bigger build.
Anyways how can I keep my motivation going to loose weight and also what has been the most effective way for you guys? Because when I go to the gym I'm kind of lost on what I should be focusing on, cardio, weights, when to alternate etc..
And how to stay away from the junk food.. I've already completely cut soda out for about 3 years, and I really don't eat too bad. And while I don't alway go to the gym I am kinda active. So what advice can you guys give me to stay motivated and loose the weight?
How to keep my motivation?
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