The same way you set time for particular things in your calendar – same way you should set time for certain people. Do not give them complete access to you. Do not give them all of your time.
As the flawed beings that we are, we sometimes forget to work towards achieving balance. We get sidetracked with achieving so much that we focus all our energy on the end product and not the individual aspects that add up (the ingredients).
Yes, we want the A-plus product but the ingredients have to be just right.