hiya!
I have so been there; I think what it was for me was that whole theme of taking care of everyone else except for myself, pushing far beyond the limits. And then like this post of yours-the lack of energy to do it-for me when I posted for something-encouragement? Idk what I was after either-but I noticed that I maybe ended up deciding that effort was not worth being put into me. That one was waaayyy down there, unknown to me, I didn't even feel it until I got outta the slump in which you speak. My guess is you actually have A LOT going on in your life, more than you give yourself credit for.
Thanks for your support for others, btw!
What got me outta it was a lot of talking about what I was feeling, the stresses I was going through-life didn't even have to get any easier, all I needed was someone supportive and who understood the extent of what was on my heart. Once I released all that, suddenly I had all this energy cuz I had taken care of myself.
I'm not sure what your experiences entail, but if nothing else I feel ya yo;
oh and just thought of something....the more self-conscious I am about posting, the strong the slump would hit me...so if you are also struggling with shyness, that could be a factor as well and that kinda thing has to be talked about and worked through too-but heya, surround yourself with supportive peeps!

soup dragon,
take care,
-obj