When you have a lot to do for the day it might feel overwhelming to start. How can I get all this done? Where should I start?
You might be able to prioritize them and there might be some that are time critical. But in general it's a good idea to first look at the size of the tasks. Put them in order and identify the biggest, most demanding task.
It's a good idea to start with a few smaller tasks so you get the feeling of getting things done right from the start. This also shortens your list fast. Once you get up to speed attack that biggest task. Get it done as soon as possible. After that rest should feel easy.
After that you can work on some smaller ones, but again leave the smallest ones last. That way you can ensure there is nothing left unfinished and you won't go overtime if the time runs out. You just move those last small ones to the next day.