The spiritual journey doesn't protect you from yourself. It doesn't protect you from the reality of what you have lived through or what lives inside of you. But regular spiritual practice gives you internal strength, and a sense of self bigger and more real than emotional upheaval and the havoc it might wreak.
The spiritual journey reminds you that the challenges along the way are very real, that the journey isn't an escape from yourself or your circumstances. It reminds you that spirituality isn't a tool for manipulating the things we want to change, but a tool that gives us the courage to face what must be faced. It doesn't change what's around you; it changes what's in you.