The most important daily activity is think and plan in advance to retain your TL status.
It covers all the necessary actions, which are equally important. These all important actions are scheduled in your VP Ledger. The best and most important activity is to get to most of your VP Ledger.
Before that, if you are new, the most important activity for you is go through SFI BASICS and all of the LAUNCHPAD lessons with concentration, to get know-how and expertise of the SFI System.