I’m sorry you’re feeling down, it seems that from time that everything seems overwhelming for you.
DNJ is absolutely right - it’s completely normal, and healthy... and this too will pass.
Rebuilding yourself after BD is not like climbing a steady hill, getting slightly higher (better) each day.
It’s full of troughs and valleys and sliding down. The measure of progress is not if you’ve just had a couple of crap days and slid back down the hill... it’s “am I higher up the Hill than I was one month/six months/12 months ago?” Inevitably, the answer to that question is always yes.
Learn to see your progress on a longer time scale, and as a wild up and down rollercoaster, and the rough days won’t seem so bad.