There can be any number of reasons that we feel susceptible to emotional harm. Whether we recall experiences of the past that have taught us not to trust or we're entering a new phase in life and don't yet feel grounded in it, we all find ourselves in a place of not feeling like we have the personal support we need to feel safe.
Without pretending like this doesn't hurt, we also have to remember that our eyes, ears, hearts, and minds can deceive us. All balled up with pride, self-loathing, shame, and guilt - they trick us into thinking we're all alone. We're not.
God is with us. He is always with us. We forget that the Holy Spirit is no less present for modern humans than Jesus was with the Apostles. Even though we can't see Him, we must try to remember that He fills us. "As the scripture has said, 'Out of the believer’s heart shall flow rivers of living water.’ Now he said this about the Spirit, which believers in him were to receive..." (John 7:38-29).
So this is what you do the next time you're feeling vulnerable. Sit still. Be silent. Get out of the way of the work of the Spirit. He "...helps us in our weakness; for we do not know how to pray as we ought, but that very Spirit intercedes with sighs too deep for words" (Romans 8:26).
God loves you. The Holy Spirit is with you. Listen to Him.