Did you read that?  It's not selfish!  It's needed for survival.  That's why on an airplane you are told to give yourself oxygen first before you try to assist others.  If you can't function, then you can't help those around you to the best of your ability.  If you don't take the time to care for yourself, you will not be able to perform at your best in every area of your life.  Self-care is a must.  I'm not saying everything becomes me, me, me!  We did grow up from toddlerhood LOL, but don't feel guilty when you do something for yourself.  So what are you doing this week to start that process?  Go for a walk, start a new book, take 5 minutes each day to just be still, or cook a new healthy meal.  Set a realistic, attainable, and specific goal and work towards that.  You've got it! No strings attached.