“Son, when you stop learning, you will soon neglect what you already know.”
As you work on achieving your goals, learn, continue to learn and apply what you are learning!! Never stop learning else soon you will neglect that you have already learnt!!
The key to not neglecting what you have already learnt is to continue learning!!
Learn, learn and continue to learn and apply all that you are learning!!!
James 1:22 KJV
 But be ye doers of the word, and not hearers only, deceiving your own selves.