Start a new habit, incrementally, taking little steps at a time. Enjoy even the briefest and most fleeting reward this new behaviour brings, and allow it to anchor you in your new habit.
Drop an old habit; look for the trigger. There always is one. It may take some tests to find the true trigger. Remember that we are self-deceivers, and when we feel threatened in any way, we will obfuscate the truth to protect ourselves. This all happens without our knowledge or awareness, as do many things in our minds. When you have the trigger, pay attention and substitute a new behaviour that will give the same or a similar reward, and repeat it as often as necessary until the old habit is gone and has been upgraded with a new behaviour.
True warriors use all the tricks of the mind to mold and shape themselves into the true core of their being—a core free of false behaviours and false beliefs, a core that is true and unnecessary to defend.
You are warriors to the core! You are of the true warrior caste, with the true warriors’ winning minds. Do not be deceived. You will have new habits that pave your pathway with gold. So it is written.