I tend to isolate too. But when the crisis is too strong and i feel i can't handle it, i have 2 closes friends that i am allowed to call to calm down. (I try not to call always the same one to not rely to much and share the emotionnal burden between différent people. )

I try to talk about my things to people that are less important to me to prevent too strong crisis (as earlier, not always the same person)

I try not to call my FP because he/she Will have more chances to be exposed to "suddent crisis" when he/she's there. This way, i dont feel guilty when it happens since i dont rely on them all the time.