I prioritize tasks by creating a list first. Once I establish that list, I go ahead and review that list to ensure what is critical and important, and then list out and number out each task by the importance. If there's any time issues or time-sensitive things that need to be done, those will be prioritized first, following by going down the list and finding something that can be done at my own discretion. Once I establish that, I go ahead and take over task 1 first, and then work my way all the way down to task 4, etc.