How do you manage Multi-tasking?

MAKE PRIORITIES AND DO BY NUMBER.

Multi-tasking systems/approaches are concerned with running and managing multiple tasks that could belong to the same user (customer, beneficiary, stakeholder, ...) or more than one  (multiple users, address spaces, ... etc) !!

Multi-tasking can be done till completion in series  and without interruption (one task after another in some sort of a priority scheme), or in the more advanced/more realistic "interrupt-driven" priority scheme that allows a revision of the task list whenever a new task arrives. If the new task has higher priority, then it will jump to the top of the queue for immediate processing, till the next interrupt happens and triggers the review/assessment process to re-validate priorities. 

Another method of  multi-tasking uses parallelsim in  a higher degree, allowing processing of multiple tasks from the same priority stack (of tasks) at the same time.  The criteria for managing multi-tasking in parallel or in series remain basically the same, including prioritization, completion, interruption, importance, urgency, throughput and balance !! I can describe these criteria in more detail if required !!

Order them in priorities

Concentrate in each task as you don't have any other task, that is to complete it perfect

Be confident and be sure, if you're not good, these heavy tasks won't be delivered to you

Make a target to yourself, always be special in everything or even one thing.