Sometimes I lose total faith in the reco

Sometimes I lose total faith in the recovery journey - I find it so hard to remain stable. Having identified my triggers as overwhelm, i feel at a loss of how to learn to handle these overpowering emotions - Whats depressing me most is that the overwhelm is from really great things that are happening in my life- And i see now with the help of my therapist that not only do I have difficulty assimilating these emotions but because these are new feelings to me my body /mind goes into shock, disbelief and then it gets stuck there- hiding away and consequently the good feelings passed- Does anyone have any suggestions to help me with this ? it's so unpleasant!!