[ddlatham]

This only applies when the opportunities you want pursue will still be available when you have time to pursue them.

Sometimes that's not the case, and you simply have to give up on one to pursue another.

[DjMojoRisin]

I think that people under-estimate their ability to multi-task!

[anamax]

While some/many/most people may under-estimate how well they could multi-task, a lot of people over-estimate how well they actually do multi-task.