Acquisition of skills requires a regular environment, an adequate opportunity to practice, and rapid and unequivocal feedback about the correctness of thoughts and actions.
Being busy is a form of laziness - lazy thinking and indiscriminate action. Being busy is most often used as a guise for avoiding the few critically important but uncomfortable actions.
It is not enough to be busy we must be productive. Everyone can account for every hour of the day but that does not mean anything was accomplished of value.
Leave all the afternoon for exercise and recreation, which are as necessary as reading. I will rather say more necessary because health is worth more than learning.
Never stop fighting until you arrive at your destined place - that is, the unique you. Have an aim in life, continuously acquire knowledge, work hard, and have perseverance to realise the great life.
Decrements in attention and concentration, being able to learn more efficiently, that's just not as good. Also, there are motor vehicle accidents, workplace accidents, we see that a lot.