I never take care of myself very much when I am depressed.   Which is most of the time.  I know what to do, how to do it.  How to use techniques to overcome procrastination.  How to pomidoro. All the things.  
But when I am depressed I can't use all the techniques if I dont care about myself.  It is just surviving or being distracted.  moment to moment.  when I get manic that is the only time I show up for myself.  
I need external help.  trying harder doesn't help.