The three dimensional world is built on polarity. The world and universe as we know it is constructed of opposites. Beyond the physical realm, however, polarities do not exist. The intensity and type of energetic frequency matters, but there is no good or bad beyond three dimensions.
When we remember this in our daily lives, we can use it to our advantage.
A powerful technique is to focus on your goal just when it seems the most unattainable. At the moment of defeat, focus intently on the success of your goal. Shifting your thoughts and emotions to the positive will starve the negative energies and empower the positive side of your polarity. It will keep your mind focused on your successful future no matter what the present moment is telling you.