Once u have this list every other day set aside about 5 mins to prioritise and sequence / rank the activities basis the impact and urgency. Where required if u have additional info around only u could do it get them on top. Where someone else could do, delegate and
ensure its followed up for closure.
Go by the order in which its prioritized and complete one at a time. Key thing: Don't worry that u have a big list at any time. Say to your self that you are getting better at it and soon u will clear this off. Ta ta you are already crunching ur task lists.