The best way to “train” yourself to have willpower is to be willing to sacrifice your desire for instant gratification for the sake of a long-term reward.  Eventually, your reward can be “living well” or “experiencing financial stability,” but for learning to exercise your willpower, it’s best to have a concrete reward.  For example, if you are on a weight loss journey, trying to control impulsive eating habits, your end reward may be a shopping spree for an entire new wardrobe in your new size. If you are controlling your impulse spending, you can have something costly that you normally wouldn’t be able to save for as your final reward.  For example, you may buy a new big-screen television or go on a relaxing trip to a tropical island with a friend. This is the essence of cultivating your willpower.  When you feel tempted to give in to an impulse, realize that what you really want is that short-lived feeling of instant gratification.  If your impulsive behavior is contrary to your goals, you will likely feel guilty after indulging in the instant gratification.  To resist an impulse for instant gratification, try the following:  Acknowledge what you want to do Tell yourself you are just looking for instant gratification Remind yourself of your short-term or long-term goals Ask yourself whether giving into your impulse is worth getting off-track for or jeopardizing your final goal.   For example, if you are working to control food impulses and you are standing next to a cookie tray at a party:  Admit that you want a cookie (or five) Acknowledge that the cookie may satisfy your craving or impulse for right now Remind yourself that you are working towards a goal of losing 40 pounds and a reward of getting to buy a new wardrobe Ask yourself whether the temporary satisfaction of eating a cookie is worth getting off-track with your progress and potentially not getting your new wardrobe in the end. A motivation or reward system will not change your willpower in the long run, but it can help set you on the road to...

How would you rephrase that briefly using Indonesian?
Ingatlah tujuan akhir yang ingin Anda capai. Hilangkan kebiasaan menikmati kesenangan instan. Berikan hadiah kecil untuk diri sendiri karena mencapai kemajuan.