Have you ever stopped yourself from asking for help, because you expected rejection?  Recognize that while someone doesn't show up for you, they're at least showing themselves to you.  You can discern, without resentment, who you put your faith in, as the antidote to poison from a snake bite.  Knowing the difference between Standards vs Expectations gives you ownership of what you'll accept and what you permit, and the simple power behind, "Okay, good to know."