If I could post a link to a you tube video that I find helpful I would. But I think that violates the rules here. Basically it's a mindset. Whether it's 1200 or 1300 or 1400, just allow the body to do it's thing. Simply ask for something positive. Like I want to be healthy and walk a 5k in 6 weeks. Or I want to eat well and fit into my new outfit in 2 months. The thing that gets people is wanting to "lose weight". If you are losing weight then you are always "losing weight". Gaining and losing. That's the goal you set. However, if you make a more concrete goal, the mind will have something to direct itself towards.

Don't know if this helps. But it's something I've learned that's been useful to me. I wish you success.