Everything in life comes down to choice, there is always a choice. You can make a choice to support what you want or can make a choice not to support it.
One of the biggest problems is that we often do not have a clear precise idea of what you want. Weight loss is a great example. Ask a person what their goal is and they say,” I want to lose 10 kg”.
We as human being attach feelings to everything. The stronger the feeling the more we strive for it and the more we want it. If you imagine your goal of losing 10 kg and attach the feelings of what it will be like when you reach your goal then your chances are so much better.
When you set a goal set aside at least 10 minutes every day imagining and feeling what it will be like when you achieve your goal. When you have this firmly fixed in your mind ask yourself every time if your decision will support your goal. Even ask yourself does your thinking support your goal.
When you choose to decide if your choices will support your goal then you will find that the attainment of your goal will be much easier.