What systems do high-earning freelancers use to manage workload?

[Btaliat]

There are many strategies and systems that can be used by high earning freelancers in order for them to get and manage workload. The first is that they may make use of task management. This means they will know how to handle their tasks per day. Sometimes they will have scheduled plans on how to make use of their time. Also, they have ways of ensuring automation to carry out some tasks for them. What do you think they still make use of?