I think it helps me to understand that it is entirely NORMAL to have peaks and valleys and emotional ups and downs. I am going through a lot right now and my emotions are all over the map. It helps to know that is a normal reaction to stress and to life events. I have sometimes felt a failure recently for being unable to contain my emotions well, because well, I am the queen of containment! I'm learning it is OK to not be so contained, to be anxious, to feel all over the map. It's part of being human. I felt really reassured when I happened to pick up a poem at random by Rumi, the 13th century Persian poet, and he was writing about much the same thing I was experiencing. Somehow it was really reassuring to know this is a universal experience.
So I would agree with your T--don't fight your feelings. Just create some space for them and let them be. You're OK.