If you don't cut down your list, you'll end up trying to use all your brainpower, which will cause you to feel burnout. This also makes you lose focus, and you end up wasting time.
Often times your brain aches and starts to feel tired after working for so many hours. That is an alarm that is telling you to take a break.
If you compare morning and afternoon, your brain is the freshest in the morning. When your brain is this fresh, you want to use that to your advantage.
There is always a system to everything. Without a system, how can there be balance, right? By creating a system to manage your habits
Stop trying to do a million things at once! If you do around 10 tasks at once, nothing will be accomplished. Your brain can't perform multiple tasks at once.